CVE-2021-22175
GitLab Server-Side Request Forgery (SSRF) Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 11 March 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 53.37% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 18 February 2026 · due 11 March 2026
- Weakness
- CWE-918
- Affected
- gitlab/gitlab
- Source
- cve@gitlab.com
EPSS 53.4% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.json ; https://nvd.nist.gov/vuln/detail/CVE-2021-22175
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.jsonVendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/issues/294178Exploit, Issue Tracking, Vendor Advisory
- https://hackerone.com/reports/1059596Permissions Required, Third Party Advisory
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.jsonVendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/issues/294178Exploit, Issue Tracking, Vendor Advisory
- https://hackerone.com/reports/1059596Permissions Required, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22175US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.