Vulnerability Monitor

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CVE-2021-39885

A Stored XSS in merge request creation page in all versions of Gitlab EE starting from 13.7 before 14.1.7, all versions starting from 14.2 before 14.2.5, and all versions starting from 14.3 before 14.3.1 allows an attacker to execute arbitrary JavaScript code on the victim's behalf via malicious approval rule names

Published

2021-10-04T17:15:08.247

Last Modified

2024-11-21T06:20:28.340

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.7 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

6.8

Impact Score

2.9

Weaknesses

Type: Primary
CWE-79

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gitlab	gitlab	< 14.1.7	Yes
Application	gitlab	gitlab	< 14.2.5	Yes
Application	gitlab	gitlab	14.3.0	Yes

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39885.json Vendor Advisory ([email protected])
https://gitlab.com/gitlab-org/gitlab/-/issues/341140 Exploit, Issue Tracking, Vendor Advisory ([email protected])
https://hackerone.com/reports/1342009 Exploit, Permissions Required, Third Party Advisory ([email protected])
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39885.json Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://gitlab.com/gitlab-org/gitlab/-/issues/341140 Exploit, Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://hackerone.com/reports/1342009 Exploit, Permissions Required, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)