Medium [CVE-2026-100755] 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
This medium-severity GitLab advisory covers CVE-2026-100755 affecting GitLab.
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Summary
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.
- before 19.2.8
- before 19.3.5
- before 19.4.2
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
- 19.2.8
- 19.3.5
- 19.4.2
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation
Upgrade to a fixed release: 19.2.8, 19.3.5, 19.4.2. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Discussion(0)
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