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CVE-2021-22175

Medium CVSS 6.8 Known exploited

Published 2021-06-11 · last changed 2026-06-17 · added to CISA KEV 2026-02-18

This one is being exploited in the wild.

CISA added CVE-2021-22175 to the Known Exploited Vulnerabilities catalog on 2026-02-18. Federal agencies are required to remediate it on a deadline. If you have affected machines, this is the class of finding that moves ahead of the rest of the queue.

The fix

We hold no Microsoft remediation data for CVE-2021-22175, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

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

Sources

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N