GHSA-cjm2-j6cm-6p6m

ghsaUSosv

Keycloak: Redirect URI validation bypass via ..;/ path traversal in OIDC auth endpoint

view advisory published 2026-04-02Licence: CC-BY-4.0

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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describes (1)

Related CVEs.

IDseverity exploitable
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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references

External citations — patches, advisories, analysis.

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