CVE-2025-2256
Improper Validation of Specified Quantity in Input in GitLab
7.5
HIGH
CVSS 3.1
EPSS 0.05%
Description
An issue has been discovered in GitLab CE/EE affecting all versions from 7.12 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed unauthorized users to render the GitLab instance unresponsive to legitimate users by sending multiple concurrent large SAML responses.
How to fix CVE-2025-2256
To remediate CVE-2025-2256, upgrade the affected package to a fixed version below.
- —upgrade to 18.1.6 or later
Is CVE-2025-2256 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 7.12.0, < 18.1.6, >= 18.2.0, < 18.2.6, >= 18.3.0, < 18.3.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |