{ "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": "2026-10-15T19:13:57.701Z" }, "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 4.18", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "openshift4/ose-oauth-proxy-rhel9", "defaultStatus": "affected", "versions": [ { "version": "1790882320", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:openshift:4.18::el9" ] }, { "vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4.19", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "openshift4/ose-oauth-proxy-rhel9", "defaultStatus": "affected", "versions": [ { "version": "1790807096", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:openshift:4.19::el9" ] }, { "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/errata/RHSA-2026:79039", "name": "RHSA-2026:79039", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2026:79169", "name": "RHSA-2026:79169", "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": "2026-10-15T19:13:57.701Z" }, "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" } } ] } }