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CVE-2025-0555: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

7.7 CVSS

Description

A Cross Site Scripting (XSS) vulnerability in GitLab-EE affecting all versions from 16.6 prior to 17.7.6, 17.8 prior to 17.8.4, and 17.9 prior to 17.9.1 allows an attacker to bypass security controls and execute arbitrary scripts in a users browser under specific conditions.

Classification

CVE ID: CVE-2025-0555

CVSS Base Severity: HIGH

CVSS Base Score: 7.7

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

Problem Types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Vendor: GitLab

Product: GitLab

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.07% (probability of being exploited)

EPSS Percentile: 17.36% (scored less or equal to compared to others)

EPSS Date: 2025-04-01 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-0555
https://gitlab.com/gitlab-org/gitlab/-/issues/514004
https://hackerone.com/reports/2939833

Timeline