CVE-2025-12734

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Source
https://cve.org/CVERecord?id=CVE-2025-12734
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-12734.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-12734
Aliases
Downstream
Related
Published
2025-12-11T07:32:01.735Z
Modified
2026-03-12T17:38:17.640014Z
Severity
  • 3.5 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N CVSS Calculator
Summary
Improper Encoding or Escaping of Output in GitLab
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12734.json",
    "cna_assigner": "GitLab",
    "cwe_ids": [
        "CWE-116"
    ]
}
References

Affected packages

Git / gitlab.com/gitlab-org/gitlab

Affected ranges

Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
07a0843ad18ecb422cdc61bf3c2ef0a9dc58a209
Fixed
39ae6bd44263cf79c3a87027501ddbd9431b21b5
Database specific 
{
    "versions": [
        {
            "introduced": "15.6"
        },
        {
            "fixed": "18.4.6"
        }
    ]
}
Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
37cc4da7158316bb9b204cef9b056f16fff1df32
Fixed
61465ef836fe9b2e9ee409ab65b2599e58e7ad91
Database specific 
{
    "versions": [
        {
            "introduced": "18.5"
        },
        {
            "fixed": "18.5.4"
        }
    ]
}
Type
GIT
Repo
https://gitlab.com/gitlab-org/gitlab
Events
Introduced
5927b4ad8ecf8b257f14761954d6e25858a3dc33
Fixed
624034751b1e0fd88f685f9b2cc297fa86fc6ed7
Database specific 
{
    "versions": [
        {
            "introduced": "18.6"
        },
        {
            "fixed": "18.6.2"
        }
    ]
}

Affected versions

v18.*
v18.5.0-ee
v18.5.1-ee
v18.5.2-ee
v18.5.3-ee
v18.6.0-ee
v18.6.1-ee

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-12734.json"