BIT-gitlab-2025-12983

vendorUSosv

Memory Allocation with Excessive Size Value in GitLab

view advisory published 2025-11-20Licence: per source

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to cause a denial of service condition by submitting specially crafted markdown content with nested formatting patterns.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2025-12983US	medium6.5	0.45% (39th)	—	2025-11-15
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated a…

references

External citations — patches, advisories, analysis.

https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/ADVISORY
https://gitlab.com/gitlab-org/gitlab/-/issues/296257WEB
https://hackerone.com/reports/3419588WEB
https://nvd.nist.gov/vuln/detail/CVE-2025-12983WEB

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