{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-83589","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2026-08-31T19:18:43.003Z","datePublished":"2026-10-01T09:17:43.584Z","dateUpdated":"2026-10-06T23:09:41.044Z"},"containers":{"cna":{"title":"Oauth-proxy: open redirect via /\\ and /\\t bypass in post-login redirect","metrics":[{"other":{"content":{"value":"Important","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"format":"CVSS"}],"descriptions":[{"lang":"en","value":"A flaw was found in oauth-proxy. The application fails to properly validate the destination redirect parameter (`rd`) during post-login redirection. A remote attacker can exploit this vulnerability by enticing a user to follow a specially crafted link, resulting in the user being redirected to an arbitrary external website after authenticating. This open redirect can be leveraged to conduct phishing attacks or credential theft."}],"affected":[{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.20","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"openshift4/ose-oauth-proxy-rhel9","defaultStatus":"affected","versions":[{"version":"1790704224","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift:4.20::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.21","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"openshift4/ose-oauth-proxy-rhel9","defaultStatus":"affected","versions":[{"version":"1790706478","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift:4.21::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.22","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"openshift4/ose-oauth-proxy-rhel9","defaultStatus":"affected","versions":[{"version":"1790724885","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift:4.22::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift4/ose-oauth-proxy","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:74380","name":"RHSA-2026:74380","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:74383","name":"RHSA-2026:74383","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:74429","name":"RHSA-2026:74429","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-83589","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2518379","name":"RHBZ#2518379","tags":["issue-tracking","x_refsource_REDHAT"]}],"datePublic":"2026-08-31T20:00:00.000Z","problemTypes":[{"descriptions":[{"cweId":"CWE-601","description":"URL Redirection to Untrusted Site ('Open Redirect')","lang":"en","type":"CWE"}]}],"x_redhatCweChain":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","workarounds":[{"lang":"en","value":"Red Hat has not identified any known mitigations for this issue. Customers are advised to apply the available security update when released."}],"timeline":[{"lang":"en","time":"2026-07-01T00:00:00.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-08-31T20:00:00.000Z","value":"Made public."}],"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2026-10-06T23:09:41.044Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-01T16:11:43.615229Z","id":"CVE-2026-83589","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":"2026-10-01T16:11:53.072Z"}}]}}