7.5

CVE-2021-39935

Warnung
Medienbericht
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
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Gitlab ≫ GitLab SwEditioncommunity Version >= 10.5.0 < 14.3.6
Gitlab ≫ GitLab SwEditionenterprise Version >= 10.5.0 < 14.3.6
Gitlab ≫ GitLab SwEditioncommunity Version >= 14.4.0 < 14.4.4
Gitlab ≫ GitLab SwEditionenterprise Version >= 14.4.0 < 14.4.4
Gitlab ≫ GitLab SwEditioncommunity Version >= 14.5.0 < 14.5.2
Gitlab ≫ GitLab SwEditionenterprise Version >= 14.5.0 < 14.5.2

03.02.2026: CISA Known Exploited Vulnerabilities (KEV) Catalog

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

Schwachstelle

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.

Beschreibung

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

Erforderliche Maßnahmen
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 35.65% 0.983
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd@nist.gov 5 10 2.9
AV:N/AC:L/Au:N/C:P/I:N/A:N
cve@gitlab.com 6.8 2.2 4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
CWE-918 Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Für Zugriff zu Vulnerability Intelligence ist ein VulnDex Zugang erforderlich.
VulnDex Intel
Media Report
04.02.2026 08:58
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39935.json
Third Party Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/346187
Vendor Advisory
Issue Tracking
https://hackerone.com/reports/1236965
Third Party Advisory
Permissions Required
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-39935
US Government Resource