CVE-2025-2256
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Gitlab
PublishedSep 12, 2025
First seenSep 12, 2025
Weakness typeCWE-1284CWE-1284
How to fix
Update
- gitlab gitlab18.1.6, 18.2.6, 18.3.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gitlab gitlab | 7.12.0 ≤ v < 18.1.6, 18.2.0 ≤ v < 18.2.6, 18.3.0 ≤ v < 18.3.2 | 18.1.6, 18.2.6, 18.3.2 |
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