Actively exploited · Published Jun 11, 2021 · Assigned by GitLab
CVE-2021-22175
Medium 6.8 Exploited
In plain English
A medium-severity server-side request forgery in GitLab from GitLab. Attackers are actively exploiting it in the wild (listed by CISA on February 18, 2026). The chance it is exploited in the next 30 days is estimated at 53.4% (higher than 99% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA guidance
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by Mar 11, 2026.
Official description
When requests to the internal network for webhooks are enabled, a server-side request forgery vulnerability in GitLab affecting all versions starting from 10.5 was possible to exploit for an unauthenticated attacker even on a GitLab instance where registration is disabled
Affected products (as reported)
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
References
- https://gitlab.com/gitlab-org/gitlab/-/issues/294178 x_refsource_MISC
- https://hackerone.com/reports/1059596 x_refsource_MISC
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.json x_refsource_CONFIRM
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22175 government-resource