Keycloak: Redirect URI validation bypass via ..;/ path traversal in OIDC auth endpoint
A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers (URIs) that use a wildcard. A successful attack may lead to the theft of an access token, resulting in information disclosure.
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beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2026-3872US | — | — | ||
A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers (… | ||||
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Referenzen
Externe Belege — Patches, Meldungen, Analysen.
- https://access.redhat.com/errata/RHSA-2026:6475WEB
- https://access.redhat.com/errata/RHSA-2026:6476WEB
- https://access.redhat.com/errata/RHSA-2026:6477WEB
- https://access.redhat.com/errata/RHSA-2026:6478WEB
- https://access.redhat.com/security/cve/CVE-2026-3872WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=2445988WEB
- https://github.com/keycloak/keycloakPACKAGE
- https://github.com/keycloak/keycloak/commit/35a71b00bc856ac402711130f60190d3a24795e7WEB
scry
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