Low severity3.5NVD Advisory· Published Dec 11, 2025· Updated Jun 17, 2026
CVE-2025-12734
CVE-2025-12734
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.6 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to, under certain conditions, render content in dialogs to other users by injecting malicious HTML content into merge request titles.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
28cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*+ 2 more
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*range: >=15.6.0,<18.4.6
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*range: >=15.6.0,<18.4.6
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*range: 15.6
- osv-coords24 versionspkg:apk/chainguard/gitlab-rails-ce-assets-18.2pkg:apk/chainguard/gitlab-rails-ce-doc-fips-18.2pkg:bitnami/gitlabpkg:apk/chainguard/gitlab-rails-ce-assets-18.3pkg:apk/chainguard/gitlab-rails-ce-fips-18.1pkg:apk/chainguard/gitlab-rails-ce-18.1pkg:apk/chainguard/gitlab-rails-ce-18.2pkg:apk/chainguard/gitlab-workhorse-ce-18.1pkg:apk/chainguard/gitlab-rails-ce-assets-18.1pkg:apk/chainguard/gitlab-rails-ce-doc-18.1pkg:apk/chainguard/gitlab-rails-ce-fips-18.2pkg:apk/chainguard/gitlab-rails-ce-fips-18.3pkg:apk/chainguard/gitlab-workhorse-ce-18.3pkg:apk/chainguard/gitlab-rails-ce-18.3pkg:apk/chainguard/gitlab-rails-ce-assets-fips-18.1pkg:apk/chainguard/gitlab-rails-ce-assets-fips-18.2pkg:apk/chainguard/gitlab-rails-ce-assets-fips-18.3pkg:apk/chainguard/gitlab-rails-ce-doc-18.3pkg:apk/chainguard/gitlab-rails-ce-doc-fips-18.1pkg:apk/chainguard/gitlab-workhorse-ce-fips-18.1pkg:apk/chainguard/gitlab-workhorse-ce-fips-18.2pkg:apk/chainguard/gitlab-rails-ce-doc-18.2pkg:apk/chainguard/gitlab-workhorse-ce-18.2pkg:apk/chainguard/gitlab-rails-ce-doc-fips-18.3
< 18.2.8-r3+ 23 more
- (no CPE)range: < 18.2.8-r3
- (no CPE)range: < 18.2.8-r4
- (no CPE)range: >= 15.6.0, < 18.4.6
- (no CPE)range: < 18.3.6-r2
- (no CPE)range: < 18.1.6-r4
- (no CPE)range: < 18.1.6-r3
- (no CPE)range: < 18.2.8-r3
- (no CPE)range: < 18.1.6-r3
- (no CPE)range: < 18.1.6-r3
- (no CPE)range: < 18.1.6-r3
- (no CPE)range: < 18.2.8-r4
- (no CPE)range: < 18.3.6-r2
- (no CPE)range: < 18.3.6-r2
- (no CPE)range: < 18.3.6-r2
- (no CPE)range: < 18.1.6-r4
- (no CPE)range: < 18.2.8-r4
- (no CPE)range: < 18.3.6-r2
- (no CPE)range: < 18.3.6-r2
- (no CPE)range: < 18.1.6-r4
- (no CPE)range: < 18.1.6-r4
- (no CPE)range: < 18.2.8-r3
- (no CPE)range: < 18.2.8-r3
- (no CPE)range: < 18.2.8-r3
- (no CPE)range: < 18.3.6-r2
- Range: 15.6 <= v < 18.4.6, 18.5 <= v < 18.5.4, 18.6 <= v < 18.6.2
Patches
Vulnerability mechanics
References
3- about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/nvdRelease NotesVendor Advisory
- gitlab.com/gitlab-org/gitlab/-/issues/579573nvdBroken Link
- hackerone.com/reports/3379381nvdPermissions Required
News mentions
1- GitLab Patch Release: 18.6.2, 18.5.4, 18.4.6GitLab Security Releases · Dec 10, 2025