Riskcovery

CVE-2026-112212

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in GitLab

State
Published
Severity
7.5 High
Published
Oct 21, 2026
Updated
Oct 30, 2026
Reserved
Oct 19, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:LGitLab

Weaknesses

  • CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Affected Products

ProductVersions
GitLabGitLab
  • 18.3 to before 19.3.6Affected
  • 19.4 to before 19.4.3Affected
  • 19.5 to before 19.5.1Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.