GitLab Patch Release: 18.6.1, 18.5.3, 18.4.5

criticalCVE-2024-9183 CVE-2025-12571 CVE-2025-12653 CVE-2025-7449 CVE-2025-6195 CVE-2025-13611

On November 26, 2025, we released versions 18.6.1, 18.5.3, 18.4.5 for GitLab Community Edition (CE) and Enterprise Edition (EE). These versions contain important bug and security fixes, and we strongly recommend that all self-managed GitLab installations be upgraded to one of these versions immediately. GitLab.com is already running the patched version. GitLab Dedicated customers do not need to take action. GitLab releases fixes for vulnerabilities in patch releases. There are two types of patch releases: scheduled releases and ad-hoc critical patches for high-severity vulnerabilities. Scheduled releases are released twice a month on the second and fourth Wednesdays. For more information, please visit our releases handbook and security FAQ . You can see all of GitLab release blog posts here . For security fixes, the issues detailing each vulnerability are made public on our issue tracker 30 days after the release in which they were patched. We are committed to ensuring that all aspects of GitLab that are exposed to customers or that host customer data are held to the highest security standards. To maintain good security hygiene, it is highly recommended that all customers upgrade to the latest patch release for their supported version. You can read more best practices in securing your GitLab instance in our blog post. Recommended Action We strongly recommend that all installations running a version affected by the issues described below are upgraded to the latest version as soon as possible . When no specific deployment type (omnibus, source code, helm chart, etc.) of a product is mentioned, it means all types are affected. Security fixes Table of security fixes Title Severity Race condition issue in CI/CD cache impacts GitLab CE/EE High Denial of Service issue in JSON input validation middleware impacts GitLab CE/EE High Authentication bypass issue in account registration impacts GitLab CE/EE Medium Denial of Service issue in HTTP response processing impacts GitLab

CSIRTS triage

vendor: GitLab product: GitLab Community Edition and Enterprise EditionOtheraffected: 18.6.1, 18.5.3, 18.4.5

What: This release contains important bug and security fixes.
Who is affected: All self-managed GitLab installations using the specified versions.
Urgency: Remediation is urgent due to the critical nature of the vulnerabilities fixed.
Action: Upgrade to one of the patched versions immediately.

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

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Details

Source: GitLab Security Releases (INTL · vendor-psirt · site)
Severity: critical
Published: 2025-11-26
Exploitation: Not in CISA KEV at last sync

Original advisory: https://docs.gitlab.com/ja-jp/releases/patches/patch-release-gitlab-18-6-1-released/

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.

Low exploitation riskCVE-2024-91830.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
Low exploitation riskCVE-2025-125710.50% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all EPSS-scored CVEs.
Low exploitation riskCVE-2025-126530.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all EPSS-scored CVEs.
Low exploitation riskCVE-2025-74490.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all EPSS-scored CVEs.
Low exploitation riskCVE-2025-61950.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.
Low exploitation riskCVE-2025-136110.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2024-9183	coverage & exploitation status	NVD · CVE.org
CVE-2025-12571	coverage & exploitation status	NVD · CVE.org
CVE-2025-12653	coverage & exploitation status	NVD · CVE.org
CVE-2025-7449	coverage & exploitation status	NVD · CVE.org
CVE-2025-6195	coverage & exploitation status	NVD · CVE.org
CVE-2025-13611	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

criticalGitLab Patch Release: 18.6.1, 18.5.3, 18.4.5gitlab

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