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

Affected

GitLab

CVSS v3.1 NVD

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 GITLAB

6.8 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

CVSS v2.0 NVD

6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS

53.37% chance of exploitation in the next 30 days, 99th percentile

CISA KEV

added 2026-02-18

Nuclei

high · CWE-918

Published

2021-06-11

Updated

2026-10-01

Proof-of-concept exploits (1)

• https://gitlab.com/gitlab-org/gitlab/-/issues/294178

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-22175.yaml

Security advisories

• https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.json
• https://hackerone.com/reports/1059596

References

• CVE Record
• NVD entry