CVE-2026-100755
Acceptance of Extraneous Untrusted Data With Trusted Data in GitLab
CVSS Score
4.6
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-349 |
| Vendor | gitlab |
| Product | gitlab |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Affected Versions
GitLab / GitLab
16.2 < 19.2.8 19.3 < 19.3.5 19.4 < 19.4.2
References
Credits
This vulnerability has been discovered internally by GitLab team member Peter Arts