CVE-2021-22261

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-10-05 · updated 2026-06-17
Weakness: CWE-79

Description

A stored Cross-Site Scripting vulnerability in the Jira integration in all GitLab versions starting from 13.9 before 14.0.9, all versions starting from 14.1 before 14.1.4, and all versions starting from 14.2 before 14.2.2 allows an attacker to execute arbitrary JavaScript code on the victim's behalf via malicious Jira API responses

Affected products

GitLab: from 13.9.0 before 14.0.9; from 14.1.0 before 14.1.4; from 14.2.0 before 14.2.2 — fixed in 14.0.9, 14.1.4, 14.2.2

How to fix

Upgrade to a fixed version: GitLab 14.0.9, 14.1.4, 14.2.2. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22261.json
https://gitlab.com/gitlab-org/gitlab/-/issues/328389
https://hackerone.com/reports/1132083
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22261.json
https://gitlab.com/gitlab-org/gitlab/-/issues/328389
https://hackerone.com/reports/1132083

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