SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2025-4439

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…

MEDIUM 5.4EPSS 0.25%

Does this matter?

Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1
5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS
0.25% probability · 16th percentile
CISA KEV
Not listed
Weakness
CWE-79
Affected
gitlab/gitlab
Source
cve@gitlab.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.