CVE-2026-83589

Oauth-proxy: open redirect via /\ and /\t bypass in post-login redirect

Medium 6.1

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.

Assigner
redhat
Published
2026-10-01
Updated
2026-10-23
Reserved
2026-08-31

Scores

SourceCVSSScoreSeverityVector
redhat3.16.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weaknesses

Affected

VendorProductVersions
Red Hat Red Hat OpenShift Container Platform 4.14 1791837363 to < * (unaffected)
others: affected
Red Hat Red Hat OpenShift Container Platform 4.15 1791632336 to < * (unaffected)
others: affected
Red Hat Red Hat OpenShift Container Platform 4.18 1790882320 to < * (unaffected)
others: affected
Red Hat Red Hat OpenShift Container Platform 4.19 1790807096 to < * (unaffected)
others: affected
Red Hat Red Hat OpenShift Container Platform 4.20 1790704224 to < * (unaffected)
others: affected
Red Hat Red Hat OpenShift Container Platform 4.21 1790706478 to < * (unaffected)
others: affected
Red Hat Red Hat OpenShift Container Platform 4.22 1790724885 to < * (unaffected)
others: affected

References

Full CVE JSON record (5.2)

API · GitHub · cve.org

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