Vulnerabilities (CVE)

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Filtered by product Firefox Esr
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2023-34416 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2024-01-07 N/A 9.8 CRITICAL
Memory safety bugs present in Firefox 113, Firefox ESR 102.11, and Thunderbird 102.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 102.12, Firefox < 114, and Thunderbird < 102.12.
CVE-2023-4056 2 Debian, Mozilla 3 Debian Linux, Firefox, Firefox Esr 2023-08-11 N/A 9.8 CRITICAL
Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and Thunderbird 102.13. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
CVE-2022-45406 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2023-08-08 N/A 9.8 CRITICAL
If an out-of-memory condition occurred when creating a JavaScript global, a JavaScript realm may be deleted while references to it lived on in a BaseShape. This could lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.
CVE-2022-29917 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2023-08-08 N/A 9.8 CRITICAL
Mozilla developers Andrew McCreight, Gabriele Svelto, Tom Ritter and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 99 and Firefox ESR 91.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.
CVE-2021-4129 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2023-08-08 N/A 9.8 CRITICAL
Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 95, Firefox ESR < 91.4.0, and Thunderbird < 91.4.0.
CVE-2022-31747 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2023-08-08 N/A 9.8 CRITICAL
Mozilla developers Andrew McCreight, Nicolas B. Pierron, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 100 and Firefox ESR 91.9. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.
CVE-2023-4057 1 Mozilla 2 Firefox, Firefox Esr 2023-08-07 N/A 9.8 CRITICAL
Memory safety bugs present in Firefox 115, Firefox ESR 115.0, and Thunderbird 115.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 116, Firefox ESR < 115.1, and Thunderbird < 115.1.
CVE-2020-15683 3 Debian, Mozilla, Opensuse 5 Debian Linux, Firefox, Firefox Esr and 2 more 2022-04-28 7.5 HIGH 9.8 CRITICAL
Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.
CVE-2020-12395 2 Canonical, Mozilla 4 Ubuntu Linux, Firefox, Firefox Esr and 1 more 2022-04-26 10.0 HIGH 9.8 CRITICAL
Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox ESR 68.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
CVE-2021-38504 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2022-02-22 7.5 HIGH 9.8 CRITICAL
When interacting with an HTML input element's file picker dialog with webkitdirectory set, a use-after-free could have resulted, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
CVE-2021-38503 2 Debian, Mozilla 4 Debian Linux, Firefox, Firefox Esr and 1 more 2022-02-22 7.5 HIGH 10.0 CRITICAL
The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
CVE-2019-11693 2 Linux, Mozilla 4 Linux Kernel, Firefox, Firefox Esr and 1 more 2021-07-21 7.5 HIGH 9.8 CRITICAL
The bufferdata function in WebGL is vulnerable to a buffer overflow with specific graphics drivers on Linux. This could result in malicious content freezing a tab or triggering a potentially exploitable crash. *Note: this issue only occurs on Linux. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
CVE-2019-9812 1 Mozilla 2 Firefox, Firefox Esr 2021-07-21 5.8 MEDIUM 9.3 CRITICAL
Given a compromised sandboxed content process due to a separate vulnerability, it is possible to escape that sandbox by loading accounts.firefox.com in that process and forcing a log-in to a malicious Firefox Sync account. Preference settings that disable the sandbox are then synchronized to the local machine and the compromised browser would restart without the sandbox if a crash is triggered. This vulnerability affects Firefox ESR < 60.9, Firefox ESR < 68.1, and Firefox < 69.
CVE-2020-6825 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2021-07-21 7.5 HIGH 9.8 CRITICAL
Mozilla developers and community members Tyson Smith and Christian Holler reported memory safety bugs present in Firefox 74 and Firefox ESR 68.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.
CVE-2019-9794 2 Microsoft, Mozilla 4 Windows, Firefox, Firefox Esr and 1 more 2021-07-21 7.5 HIGH 9.8 CRITICAL
A vulnerability was discovered where specific command line arguments are not properly discarded during Firefox invocation as a shell handler for URLs. This could be used to retrieve and execute files whose location is supplied through these command line arguments if Firefox is configured as the default URI handler for a given URI scheme in third party applications and these applications insufficiently sanitize URL data. *Note: This issue only affects Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
CVE-2019-9792 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2021-07-21 7.5 HIGH 9.8 CRITICAL
The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
CVE-2019-11740 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2021-07-21 7.5 HIGH 9.8 CRITICAL
Mozilla developers and community members reported memory safety bugs present in Firefox 68, Firefox ESR 68, and Firefox 60.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.
CVE-2019-9800 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2021-07-21 7.5 HIGH 9.8 CRITICAL
Mozilla developers and community members reported memory safety bugs present in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
CVE-2019-9819 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2021-07-21 7.5 HIGH 9.8 CRITICAL
A vulnerability where a JavaScript compartment mismatch can occur while working with the fetch API, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
CVE-2019-9788 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2021-07-21 7.5 HIGH 9.8 CRITICAL
Mozilla developers and community members reported memory safety bugs present in Firefox 65, Firefox ESR 60.5, and Thunderbird 60.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
CVE-2020-6814 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2021-07-21 7.5 HIGH 9.8 CRITICAL
Mozilla developers reported memory safety bugs present in Firefox and Thunderbird 68.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.
CVE-2020-6831 4 Canonical, Debian, Mozilla and 1 more 6 Ubuntu Linux, Debian Linux, Firefox and 3 more 2021-07-21 7.5 HIGH 9.8 CRITICAL
A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
CVE-2019-11709 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2021-07-21 7.5 HIGH 9.8 CRITICAL
Mozilla developers and community members reported memory safety bugs present in Firefox 67 and Firefox ESR 60.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
CVE-2019-11735 1 Mozilla 2 Firefox, Firefox Esr 2021-07-21 7.5 HIGH 9.8 CRITICAL
Mozilla developers and community members reported memory safety bugs present in Firefox 68 and Firefox ESR 68. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.
CVE-2019-9791 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2021-07-21 7.5 HIGH 9.8 CRITICAL
The type inference system allows the compilation of functions that can cause type confusions between arbitrary objects when compiled through the IonMonkey just-in-time (JIT) compiler and when the constructor function is entered through on-stack replacement (OSR). This allows for possible arbitrary reading and writing of objects during an exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
CVE-2018-18498 4 Canonical, Debian, Mozilla and 1 more 11 Ubuntu Linux, Debian Linux, Firefox and 8 more 2020-08-24 7.5 HIGH 9.8 CRITICAL
A potential vulnerability leading to an integer overflow can occur during buffer size calculations for images when a raw value is used instead of the checked value. This leads to a possible out-of-bounds write. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.
CVE-2019-11733 1 Mozilla 2 Firefox, Firefox Esr 2020-08-24 5.0 MEDIUM 9.8 CRITICAL
When a master password is set, it is required to be entered again before stored passwords can be accessed in the 'Saved Logins' dialog. It was found that locally stored passwords can be copied to the clipboard thorough the 'copy password' context menu item without re-entering the master password if the master password had been previously entered in the same session, allowing for potential theft of stored passwords. This vulnerability affects Firefox < 68.0.2 and Firefox ESR < 68.0.2.
CVE-2018-5095 4 Canonical, Debian, Mozilla and 1 more 11 Ubuntu Linux, Debian Linux, Firefox and 8 more 2020-08-24 7.5 HIGH 9.8 CRITICAL
An integer overflow vulnerability in the Skia library when allocating memory for edge builders on some systems with at least 8 GB of RAM. This results in the use of uninitialized memory, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.
CVE-2019-9795 1 Mozilla 3 Firefox, Firefox Esr, Thunderbird 2020-08-24 7.5 HIGH 9.8 CRITICAL
A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by malicious JavaScript to trigger a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
CVE-2013-5615 5 Canonical, Fedoraproject, Mozilla and 2 more 10 Ubuntu Linux, Fedora, Firefox and 7 more 2020-08-12 7.5 HIGH 9.8 CRITICAL
The JavaScript implementation in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 does not properly enforce certain typeset restrictions on the generation of GetElementIC typed array stubs, which has unspecified impact and remote attack vectors.
CVE-2013-5613 6 Canonical, Fedoraproject, Mozilla and 3 more 17 Ubuntu Linux, Fedora, Firefox and 14 more 2020-08-12 10.0 HIGH 9.8 CRITICAL
Use-after-free vulnerability in the PresShell::DispatchSynthMouseMove function in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors involving synthetic mouse movement, related to the RestyleManager::GetHoverGeneration function.
CVE-2013-5616 6 Canonical, Fedoraproject, Mozilla and 3 more 17 Ubuntu Linux, Fedora, Firefox and 14 more 2020-08-12 7.5 HIGH 9.8 CRITICAL
Use-after-free vulnerability in the nsEventListenerManager::HandleEventSubType function in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors related to mListeners event listeners.
CVE-2013-5609 6 Canonical, Fedoraproject, Mozilla and 3 more 17 Ubuntu Linux, Fedora, Firefox and 14 more 2020-08-12 10.0 HIGH 9.8 CRITICAL
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
CVE-2013-5618 6 Canonical, Fedoraproject, Mozilla and 3 more 17 Ubuntu Linux, Fedora, Firefox and 14 more 2020-08-12 10.0 HIGH 9.8 CRITICAL
Use-after-free vulnerability in the nsNodeUtils::LastRelease function in the table-editing user interface in the editor component in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 allows remote attackers to execute arbitrary code by triggering improper garbage collection.
CVE-2013-6671 6 Canonical, Fedoraproject, Mozilla and 3 more 17 Ubuntu Linux, Fedora, Firefox and 14 more 2020-08-12 10.0 HIGH 9.8 CRITICAL
The nsGfxScrollFrameInner::IsLTR function in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 allows remote attackers to execute arbitrary code via crafted use of JavaScript code for ordered list elements.
CVE-2014-1493 6 Canonical, Debian, Mozilla and 3 more 17 Ubuntu Linux, Debian Linux, Firefox and 14 more 2020-08-11 10.0 HIGH 9.8 CRITICAL
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
CVE-2014-1486 7 Canonical, Debian, Fedoraproject and 4 more 17 Ubuntu Linux, Debian Linux, Fedora and 14 more 2020-08-07 10.0 HIGH 9.8 CRITICAL
Use-after-free vulnerability in the imgRequestProxy function in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, and SeaMonkey before 2.24 allows remote attackers to execute arbitrary code via vectors involving unspecified Content-Type values for image data.
CVE-2014-1477 7 Canonical, Debian, Fedoraproject and 4 more 18 Ubuntu Linux, Debian Linux, Fedora and 15 more 2020-08-07 6.8 MEDIUM 9.8 CRITICAL
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, and SeaMonkey before 2.24 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
CVE-2014-1532 7 Canonical, Debian, Fedoraproject and 4 more 16 Ubuntu Linux, Debian Linux, Fedora and 13 more 2020-08-06 7.5 HIGH 9.8 CRITICAL
Use-after-free vulnerability in the nsHostResolver::ConditionallyRefreshRecord function in libxul.so in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and SeaMonkey before 2.26 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors related to host resolution.
CVE-2014-1524 7 Canonical, Debian, Fedoraproject and 4 more 16 Ubuntu Linux, Debian Linux, Fedora and 13 more 2020-08-06 7.5 HIGH 9.8 CRITICAL
The nsXBLProtoImpl::InstallImplementation function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and SeaMonkey before 2.26 does not properly check whether objects are XBL objects, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via crafted JavaScript code that accesses a non-XBL object as if it were an XBL object.
CVE-2014-1511 6 Canonical, Debian, Mozilla and 3 more 17 Ubuntu Linux, Debian Linux, Firefox and 14 more 2020-08-05 7.5 HIGH 9.8 CRITICAL
Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allow remote attackers to bypass the popup blocker via unspecified vectors.
CVE-2014-1514 6 Canonical, Debian, Mozilla and 3 more 17 Ubuntu Linux, Debian Linux, Firefox and 14 more 2020-08-05 7.5 HIGH 9.8 CRITICAL
vmtypedarrayobject.cpp in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 does not validate the length of the destination array before a copy operation, which allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds write and application crash) by triggering incorrect use of the TypedArrayObject class.
CVE-2014-1508 6 Canonical, Debian, Mozilla and 3 more 17 Ubuntu Linux, Debian Linux, Firefox and 14 more 2020-08-03 6.4 MEDIUM 9.1 CRITICAL
The libxul.so!gfxContext::Polygon function in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allows remote attackers to obtain sensitive information from process memory, cause a denial of service (out-of-bounds read and application crash), or possibly bypass the Same Origin Policy via vectors involving MathML polygon rendering.
CVE-2014-1510 6 Canonical, Debian, Mozilla and 3 more 17 Ubuntu Linux, Debian Linux, Firefox and 14 more 2020-08-03 7.5 HIGH 9.8 CRITICAL
The Web IDL implementation in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allows remote attackers to execute arbitrary JavaScript code with chrome privileges by using an IDL fragment to trigger a window.open call.
CVE-2020-12388 2 Microsoft, Mozilla 3 Windows, Firefox, Firefox Esr 2020-05-28 7.5 HIGH 10.0 CRITICAL
The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape. *Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox ESR < 68.8 and Firefox < 76.
CVE-2020-12389 2 Microsoft, Mozilla 3 Windows, Firefox, Firefox Esr 2020-05-27 7.5 HIGH 10.0 CRITICAL
The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape. *Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox ESR < 68.8 and Firefox < 76.
CVE-2016-1930 3 Mozilla, Opensuse, Oracle 5 Firefox, Firefox Esr, Leap and 2 more 2019-12-27 10.0 HIGH 9.8 CRITICAL
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 44.0 and Firefox ESR 38.x before 38.6 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
CVE-2016-5254 2 Mozilla, Oracle 3 Firefox, Firefox Esr, Linux 2019-12-27 7.5 HIGH 9.8 CRITICAL
Use-after-free vulnerability in the nsXULPopupManager::KeyDown function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) by leveraging keyboard access to use the Alt key during selection of top-level menu items.
CVE-2016-1962 3 Mozilla, Opensuse, Oracle 4 Firefox, Firefox Esr, Opensuse and 1 more 2019-12-27 10.0 HIGH 9.8 CRITICAL
Use-after-free vulnerability in the mozilla::DataChannelConnection::Close function in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 allows remote attackers to execute arbitrary code by leveraging mishandling of WebRTC data-channel connections.
CVE-2018-12369 2 Canonical, Mozilla 3 Ubuntu Linux, Firefox, Firefox Esr 2019-10-03 7.5 HIGH 9.8 CRITICAL
WebExtensions bundled with embedded experiments were not correctly checked for proper authorization. This allowed a malicious WebExtension to gain full browser permissions. This vulnerability affects Firefox ESR < 60.1 and Firefox < 61.