Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-39935

CVE-2021-39935MEDIUM

GitLab Community and Enterprise Editions

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   H   N   N  C  H  N  N    6.8   .3565   98.4   YES

AFFECTED
  Product  Versions           Fixed
  GitLab   >=10.5, <14.3.6 –  —

TIMELINE
  Aug 23  Reserved by GitLab
  Dec 13  Published (CNA: GitLab)
  Feb 3   Added to CISA KEV, remediation due 2026-02-24

CWE-918 · CNA: GitLab · CVSS v3.1 · 4 references · KEV due February 24, 2026

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.5 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. Unauthorized external users could perform Server Side Requests via the CI Lint API

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 23, 2021	Reserved	Reserved by GitLab
December 13, 2021	Published	Published (CNA: GitLab)
February 3, 2026	KEV ADDED	Added to CISA KEV, remediation due 2026-02-24

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
GitLab	GitLab	—	>=10.5, <14.3.6	—

Weaknesses

CWE-918

References (4)

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39935.json [x_refsource_CONFIRM]
https://gitlab.com/gitlab-org/gitlab/-/issues/346187 [x_refsource_MISC]
https://hackerone.com/reports/1236965 [x_refsource_MISC]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-39935 [government-resource]

Authoritative record: CVE-2021-39935 at cve.org

Vendors: gitlab

Weaknesses: CWE-918

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-39935 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.