CVE-2021-22175
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
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Base score: 9.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 53%
- Percentile among all scored CVEs: 99
- Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
CISA KEV — actively exploited
- Added to catalog: 2/18/2026
- Remediation due date: 3/11/2026
- Known ransomware use: Unknown
💥 Public exploits
Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.
- Nuclei template (automated mass detection) · GitLab CI Lint API - Server-Side Request Forgery
🎯 ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1190Exploit Public-Facing Applicationinitial access60 % - Primary impact
T1090Proxycommand and control55 %
Inferred by deterministic rules from the CVSS vector and CWE. Indicative only.
🛡️ ATT&CK mitigations that cover these techniques
Affected technologies (1)
CWEs
- CWE-918
- CWE-918
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/294178
- https://hackerone.com/reports/1059596
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/294178
- https://hackerone.com/reports/1059596
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22175
Raw JSON (NVD)
Show
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