{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-112212","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","state":"PUBLISHED","assignerShortName":"GitLab","dateReserved":"2026-10-19T10:34:06.433Z","datePublished":"2026-10-21T23:33:45.429Z","dateUpdated":"2026-10-30T17:33:45.464Z"},"containers":{"cna":{"title":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in GitLab","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"GitLab","product":"GitLab","repo":"https://gitlab.com/gitlab-org/gitlab","cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"],"versions":[{"version":"18.3","status":"affected","lessThan":"19.3.6","versionType":"semver"},{"version":"19.4","status":"affected","lessThan":"19.4.3","versionType":"semver"},{"version":"19.5","status":"affected","lessThan":"19.5.1","versionType":"semver"}],"defaultStatus":"unaffected"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')","cweId":"CWE-444","type":"CWE"}]}],"references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/627499"},{"url":"https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"LOW","baseScore":7.5,"baseSeverity":"HIGH"}}],"solutions":[{"lang":"en","value":"Upgrade to versions 19.3.6, 19.4.3, 19.5.1 or above."}],"credits":[{"lang":"en","value":"This vulnerability has been discovered internally by GitLab team member Peter Arts","type":"finder"}],"providerMetadata":{"orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","shortName":"GitLab","dateUpdated":"2026-10-21T23:33:45.429Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-30T17:32:37.930476Z","id":"CVE-2026-112212","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-30T17:33:45.464Z"}}]}}