CVE-2021-22878

Nextcloud Server prior to 20.0.6 is vulnerable to reflected cross-site scripting (XSS) due to lack of sanitization in `OC.Notification.show`.

CVSS v3.0 4.8 MEDIUM
CVSS v2.0 3.5 LOW

4.8^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.7 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

3.5^/10

CVSS v2.0 : LOW

Vector : AV:N/AC:M/Au:S/C:N/I:P/A:N

Exploitability : 6.8 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/nextcloud/server/pull/25234	Patch Third Party Advisory
https://nextcloud.com/security/advisory/?id=NC-SA-2021-005	Vendor Advisory
https://hackerone.com/reports/896522	Exploit Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S/	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

Information

Published : 2021-03-03 18:15

Updated : 2022-01-01 18:02

NVD link : CVE-2021-22878

Mitre link : CVE-2021-22878

JSON object : View

Products Affected

fedoraproject

fedora

nextcloud

nextcloud_server

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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