What’s Vulnerable › Vulnerabilities

CVE-2025-7734: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-13 · updated 2026-06-17
• Weakness: CWE-79

Description

An issue has been discovered in GitLab CE/EE affecting all versions from 14.2 before 18.0.6, 18.1 before 18.1.4 and 18.2 before 18.2.2 that, under certain conditions, could have allowed a successful attacker to execute actions on behalf of users by injecting malicious content.

Affected products

• GitLab: from 14.2.0 before 18.0.6; from 18.1.0 before 18.1.4; from 18.2.0 before 18.2.2 — fixed in 18.0.6, 18.1.4, 18.2.2

How to fix

Upgrade to a fixed version: GitLab 18.0.6, 18.1.4, 18.2.2. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/gitlab/-/issues/556090
• https://hackerone.com/reports/3247096

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