CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities catalog.

Remediation Deadline: Feb 24, 2026

CVE-2021-39935

High

EPSS 54.3%CISA KEV

GitLab/Community and Enterprise Editions

Description

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.

EPSS — Exploit Probability

54.3%

Higher than 98.0% of all CVEs

Required Action

https://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-released/ ; https://nvd.nist.gov/vuln/detail/CVE-2021-39935

Risk Assessment

HIGH

In CISA KEV

High EPSS

Details

Severity: High
EPSS: 54.3%
CISA KEV: Yes
Ransomware: Unknown
Articles: 0

Timeline

Published

Feb 3, 2026

Added to KEV

Feb 3, 2026

Remediation Due

Feb 24, 2026

Affected Product

GitLab

Community and Enterprise Editions

View all GitLab CVEs

External Links

NVD (NIST)CVE Details MITRE CVE