SSRF in GitLab
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
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.534 (99.0th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.534 · newest: 0.534 · change: 0.000
Affected products
- GitLab — versions >=10.5, <13.6.7, >=13.7, <13.7.7, >=13.8, <13.8.4
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
- gitlab.com/gitlab-org/gitlab/-/issues/294178 (Exploit, Issue Tracking, Vendor Advisory)
- hackerone.com/reports/1059596 (Permissions Required, Third Party Advisory)
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.json (Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2021-22175?
- CVE-2021-22175 is a medium-severity vulnerability in GitLab, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.8/10. Published 2021-06-11.
- How severe is CVE-2021-22175?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2021-22175 known to be exploited?
- Yes. CVE-2021-22175 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-02-18), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.