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.
History

Fri, 30 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 27 Oct 2026 14:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:community:*:*:*
cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:enterprise:*:*:*

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

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitLab

Published: 2026-10-21T23:33:45.429Z

Updated: 2026-10-30T17:33:45.464Z

Reserved: 2026-10-19T10:34:06.433Z

Link: CVE-2026-112212

cve-icon Vulnrichment

Updated: 2026-10-30T17:33:25.530Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-22T01:16:57.740

Modified: 2026-10-30T18:17:20.770

Link: CVE-2026-112212

cve-icon Redhat

No data.