CVE-2025-4439: GitLab cross-site scripting (XSS)
This GitLab advisory covers CVE-2025-4439 in GitLab.
- CVE-2025-4439
Key facts
- Vendor rating
- High, CVSS 7.7
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N· base score 7.7, scored by GitLabAttack vector: network. Attack complexity: high. Privileges required: low. User interaction: required. Scope: changed. Confidentiality impact: high. Integrity impact: high. Availability impact: none.- Weakness
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CISA SSVC
- Exploitation: none observed. Automatable: no. Technical impact: total. CISA, .
- CISA KEV
- Not listed (catalogue checked )
- Affected
- GitLab 15.10 before 18.0.5; GitLab 18.1 before 18.1.3; GitLab 18.2 before 18.2.1
- Fixed in
- 18.0.5, 18.1.3, 18.2.1
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18.1 before 18.1.3, and 18.2 before 18.2.1 that could have allowed an authenticated user to perform cross-site scripting attacks when the instance is served through certain content delivery networks.
Text from the source record.
- GitLab 15.10 before 18.0.5
- GitLab 18.1 before 18.1.3
- GitLab 18.2 before 18.2.1
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2025-4439
Upgrade to a fixed release named by GitLab:
- 18.0.5
- 18.1.3
- 18.2.1
More GitLab advisories
CVE-2026-110264Oct 22, 2026issue has been discovered in GitLab CE/EECVE-2026-12664Oct 21, 2026GitLab CE/EE vulnerabilityCVE-2026-13319Oct 21, 2026GitLab improper access controlCVE-2026-14288Oct 21, 2026GitLab improper access controlCVE-2026-15723Oct 21, 2026GitLab CE/EE vulnerabilityCVE-2026-16255Oct 21, 2026GitLab EE vulnerability
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