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CVE-2021-39935: GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability
GitLab Community and Enterprise Editions · in CISA KEV since 2026-02-03
2026-02-03added to KEV
2026-02-24federal remediation due date
35.65%EPSS exploit probability (30 days) 98.4th percentile
7.5 HIGHCVSS 3.1
Unknownknown ransomware use
1,513days from NVD publication to KEV
What it is
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 (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-918 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD published | 2021-12-13 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2021-39935.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.