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NCSC-2026-0297 [1.00] [M/H] Vulnerabilities patched in GitLab Enterprise Edition and Community Edition

unknownCVE-2025-9486CVE-2026-4879CVE-2026-6821CVE-2026-7427CVE-2026-8667CVE-2026-15216
GitLab has patched multiple vulnerabilities in GitLab Enterprise Edition (EE) and Community Edition (CE) versions ranging from 12.0 through 19.2.2. The vulnerabilities concern various aspects of GitLab, including improper privilege assignment where users with a pending membership status could unintentionally inherit permissions from custom roles. Furthermore, there are missing authorization controls on API endpoints, allowing users with developer roles to access external status check configurations and limited merge request information from private projects. A Denial-of-Service is also possible through improper input validation, and cross-site scripting (XSS) vulnerabilities in the analytics dashboard component due to insufficient sanitization of user input. Additionally, users with lower privileges could modify certain package registry metadata and trigger CI/CD pipelines on protected branches without proper permissions. There were also authorization issues that made it possible to modify project and group settings without authorization, and a GraphQL query that provided access to policy configurations of disallowed namespaces. Finally, there was an issue with improper authorization of identity information, resulting in incorrect assignment of AI usage to other namespaces. These vulnerabilities can lead to unauthorized access, data modification, privilege escalation, and disruption of availability within the GitLab Enterprise Edition environment.

CSIRTS triage

What
Multiple vulnerabilities including improper privilege assignment for pending members, missing authorization on API endpoints, DoS via input validation, XSS in analytics, and privilege escalation in package registry.
Who is affected
GitLab Enterprise Edition and Community Edition instances running versions 12.0 through 19.2.2.
Urgency
High urgency; multiple attack vectors enable privilege escalation, unauthorized access, and service disruption.
Action
Update GitLab Enterprise Edition and Community Edition to versions above 19.2.2 with patches for CVE-2025-9486, CVE-2026-4879, CVE-2026-6821, CVE-2026-7427, CVE-2026-8667, CVE-2026-15216, CVE-2026-15217, and CVE-2026-15423.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
NCSC-NL Advisories (NL · national-cert · site)
Severity
unknown
Published
2026-08-13
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://advisories.ncsc.nl/advisory?id=NCSC-2026-0297

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2025-9486coverage & exploitation statusNVD · CVE.org
CVE-2026-4879coverage & exploitation statusNVD · CVE.org
CVE-2026-6821coverage & exploitation statusNVD · CVE.org
CVE-2026-7427coverage & exploitation statusNVD · CVE.org
CVE-2026-8667coverage & exploitation statusNVD · CVE.org
CVE-2026-15216coverage & exploitation statusNVD · CVE.org
CVE-2026-15217coverage & exploitation statusNVD · CVE.org
CVE-2026-15423coverage & exploitation statusNVD · CVE.org
CVE-2026-16494coverage & exploitation statusNVD · CVE.org
CVE-2026-16627coverage & exploitation statusNVD · CVE.org
CVE-2026-18244coverage & exploitation statusNVD · CVE.org
CVE-2026-18433coverage & exploitation statusNVD · CVE.org
CVE-2026-19228coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for GitLab Enterprise Edition

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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