CVE-2026-112212 (GCVE-0-2026-112212)

Vulnerability from cvelistv5 – Published: 2026-10-21 23:33 – Updated: 2026-10-21 23:33
VLAI
Title
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in GitLab
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
GitLab CNA under the mitre root
CNA scorecard C 75/100 over 339 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
GitLab GitLab Affected: 18.3 , < 19.3.6 (semver)
Affected: 19.4 , < 19.4.3 (semver)
Affected: 19.5 , < 19.5.1 (semver)
    cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
This vulnerability has been discovered internally by GitLab team member Peter Arts
Show details on NVD website
To clipboard 

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}



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