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CVE-2025-12983VulnerabilityPublished

GitLab CE/EE affecting all · GitLab Has Remediated an Issue

Source GCVE Database

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Authoritative record:CVE-2025-12983· Low 3.5

Not known to be exploited · CVSS 3.5 Low · fixed in 18.5.2 : update affected systems when convenient.

Data as of 13 Nov 2026, 19:09 UTC

CVSS 3.1 base score
3.5Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitLab)CVSS 3.13.5
Patch
Available – fixed in 18.5.2, 18.4.4, 18.3.6
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Nov 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

AI-suggested

The issue has been remediated in GitLab CE/EE versions 18.3.6, 18.4.4, and 18.5.2 and later. Users should upgrade to these fixed versions or later to mitigate this vulnerability.

Description

A vulnerability in GitLab CE/EE versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 allows an authenticated attacker to cause a denial of service by submitting specially crafted markdown content with nested formatting patterns. This issue has been remediated in the specified fixed versions.

References

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