Oct 20, 2026 · 20:05 UTC SEARCH
UNRATED KNOWN EXPLOITED
Vulnerability intelligence

CVE-2021-39935

VendorGitLab
ProductCommunity and Enterprise Editions
Known exploitedYes
Added to CISA KEVFebruary 3, 2026
KEV due dateFebruary 24, 2026
Known ransomware useNot identified by CISA

GitLab Community and Enterprise Editions contain a server-side request forgery vulnerability which could allow unauthorized external users to perform Server Side Requests via the CI Lint API.

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.

CISA KEV status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities Catalog. Known ransomware campaign use: Unknown.

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