PT-2025-47049 · Gitlab · Gitlab Ce/Ee

Published 2025-11-12 · Updated 2025-11-19 · CVE-2025-12983

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions GitLab CE/EE versions 16.9 through 18.3.5 GitLab CE/EE versions 18.4 through 18.4.3 GitLab CE/EE versions 18.5 through 18.5.1

Description An authenticated attacker could cause a denial of service condition by submitting specially crafted markdown content with nested formatting patterns. The issue affects GitLab CE/EE.

Recommendations GitLab CE/EE versions 16.9 through 18.3.5 should be updated to version 18.3.6 or later. GitLab CE/EE versions 18.4 through 18.4.3 should be updated to version 18.4.4 or later. GitLab CE/EE versions 18.5 through 18.5.1 should be updated to version 18.5.2 or later.

Exploit

Fix

DoS

Weakness Enumeration

CWE-789

Related Identifiers

BDU:2025-14464

BIT-GITLAB-2025-12983

CVE-2025-12983

Affected Products

Gitlab Ce/Ee

References · 16

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12983.json · Exploit
• 🔥 https://hackerone.com/reports/3419588 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-12983 · Security Note
• https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-12983 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-12983 · Security Note
• https://bdu.fstec.ru/vul/2025-14464 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-12983 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-12983 · Vendor Advisory
• https://t.me/cveNotify/142918 · Telegram Post
• https://gitlab.com/gitlab-org/gitlab/-/issues/296257 · Note
• https://twitter.com/AnonOzzyDude/status/1989736843667996914 · Twitter Post
• https://t.me/cveNotify/143417 · Telegram Post
• https://t.me/CVEtracker/37414 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1989632392366100738 · Twitter Post