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CVE-2021-39935

GitLab — GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability

GitLab · CWE-918 — Server-side request forgery · in CISA KEV since 2026-02-03

CISA federal deadline · Overdue by 8 monthsCISA KEVActively Exploited
75

EVRS 75 of 100 Urgent

Patch This Cycle

Rank 793 of 2,960 tracked

Raised to the floor for a confirmed exploited vulnerability.

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Why it scores 75

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and an EPSS probability of 0.361.

  • CISA KEVApplied
  • RansomwareDid not apply
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

gitlab: update to 14.3.6 or later | gitlab: update to 14.4.4 or later | gitlab: update to 14.5.2 or later

Affected versions

  • gitlab>= 10.5.0 < 14.3.6>= 14.4.0 < 14.4.4>= 14.5.0 < 14.5.2

Remediation

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 7.5 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.361 (98.5th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Unknown or none CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2026-02-24 · CISA federal deadline · Overdue by 8 months CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. None known Metasploit
EUVD cross-referenceENISA's record: CVSS 6.8 (v3.1), assigned by GitLab. Listed ENISA EUVD

Description

NVD

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

What CISA says to do