GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, an unauthenticated user could have poisoned a shared cache's OAuth/OIDC discovery document to redirect certain flows to an externally controlled server, due to improper trust of user-supplied values when constructing endpoint URLs in cached discovery responses.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
Upgrade to versions 19.3.6, 19.4.3, 19.5.1 or above.
Workaround
No workaround given by the vendor.
References
History
Wed, 21 Oct 2026 23:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, an unauthenticated user could have poisoned a shared cache's OAuth/OIDC discovery document to redirect certain flows to an externally controlled server, due to improper trust of user-supplied values when constructing endpoint URLs in cached discovery responses. | |
| Title | Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in GitLab | |
| First Time appeared |
Gitlab
Gitlab gitlab |
|
| Weaknesses | CWE-444 | |
| CPEs | cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Gitlab
Gitlab gitlab |
|
| References |
| |
| Metrics |
cvssV3_1
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Projects
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MITRE
Status: PUBLISHED
Assigner: GitLab
Published:
Updated: 2026-10-21T23:33:45.429Z
Reserved: 2026-10-19T10:34:06.433Z
Link: CVE-2026-112212
Vulnrichment
No data.
NVD
No data.
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses