{"id":"CVE-2026-19078","state":"PUBLISHED","title":"Ose-oauth-server: oauth-server: open redirect vulnerability enables phishing via unvalidated parameter.","description":"A flaw was found in the oauth-server component. This open redirect vulnerability occurs when the 'then' parameter in the grant approval handler is not properly validated. A remote attacker can craft a malicious URL that, when approved or denied by an authenticated user, redirects them to an attacker-controlled website. This could enable phishing attacks, potentially tricking users into revealing sensitive information.","publishedAt":"2026-08-11T15:34:06.094Z","updatedAt":"2026-08-11T15:56:06.058Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","source":"redhat"},"assigner":"redhat","products":["Red Hat Red Hat OpenShift Container Platform 4"],"affected":[{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openshift4/ose-oauth-server-rhel8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openshift4/ose-oauth-server-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]}],"references":["https://access.redhat.com/security/cve/CVE-2026-19078","https://bugzilla.redhat.com/show_bug.cgi?id=2511975"],"weaknesses":["CWE-601"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/19xxx/CVE-2026-19078.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-19078","state":"PUBLISHED","datePublished":"2026-08-11T15:34:06.094Z","dateUpdated":"2026-08-11T15:56:06.058Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2026-08-06T10:51:12.755Z"},"containers":{"cna":{"title":"Ose-oauth-server: oauth-server: open redirect vulnerability enables phishing via unvalidated parameter.","descriptions":[{"lang":"en","value":"A flaw was found in the oauth-server component. This open redirect vulnerability occurs when the 'then' parameter in the grant approval handler is not properly validated. A remote attacker can craft a malicious URL that, when approved or denied by an authenticated user, redirects them to an attacker-controlled website. This could enable phishing attacks, potentially tricking users into revealing sensitive information."}],"affected":[{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openshift4/ose-oauth-server-rhel8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openshift4/ose-oauth-server-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-19078","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2511975","name":"RHBZ#2511975","tags":["issue-tracking","x_refsource_REDHAT"]}],"metrics":[{"other":{"content":{"value":"Low","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-601","description":"URL Redirection to Untrusted Site ('Open Redirect')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateUpdated":"2026-08-11T15:34:06.094Z"},"datePublic":"2026-08-06T00:00:00.000Z","x_redhatCweChain":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","workarounds":[{"lang":"en","value":"There is no mitigation for this flaw. However, the risk is limited as the vulnerability only enables phishing — no OAuth tokens, authorization codes, or session credentials are exposed through the redirect."}],"timeline":[{"lang":"en","time":"2026-07-17T00:00:00.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-08-06T00:00:00.000Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Khalil Lemtaffah (Nokia), Kien Pham (Ninh Thanh Cyber Security (NTCS)), and Ta Duc Thien (Ninh Thanh Cyber Security (NTCS)) for reporting this issue."}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-11T15:54:56.603573Z","id":"CVE-2026-19078","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-11T15:56:06.058Z"}}]}}}