CVE-2026-100755
Medium
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain deployment configurations, could have allowed an authenticated user to poison cached page content served to other users due to improper cache key construction.
SeverityMedium
CVSS4.6
Exploit probability—
Product
Gitlab
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-349CWE-349
How to fix
Update
- gitlab gitlab19.2.8, 19.3.5, 19.4.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gitlab gitlab | 16.2.0 ≤ v < 19.2.8, 19.3.0 ≤ v < 19.3.5, 19.4.0 ≤ v < 19.4.2 | 19.2.8, 19.3.5, 19.4.2 |
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