CVE-2025-2254 PUBLISHED

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

Assigner: GitLab
Reserved: 12.03.2025 Published: 12.06.2025 Updated: 12.06.2025

An issue has been discovered in GitLab CE/EE affecting all versions from 17.9 before 17.10.8, 17.11 before 17.11.4, and 18.0 before 18.0.2. Improper output encoding in the snipper viewer functionality lead to Cross-Site scripting attacks.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS Score: 8.7

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	GitLab
Product	GitLab
Versions	Default: unaffected affected from 17.9 to 17.10.8 (excl.) affected from 17.11 to 17.11.4 (excl.) affected from 18.0 to 18.0.2 (excl.)

Solutions

Upgrade to versions 17.10.8, 17.11.4, 18.0.2 or above.

Credits

Thanks [yvvdwf](https://hackerone.com/yvvdwf) for reporting this vulnerability through our HackerOne bug bounty program finder

References

Problem Types

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