CVE-2026-3872
Keycloak: keycloak: information disclosure due to redirect_uri validation bypass
Description
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:RUser InteractionRequired
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:NAvailabilityNone
Weaknesses
Affected Products
Red Hat
commercial·USaka redhat
Exploitability
Official Patch Available
Workaround Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Initial Access
References
https://access.redhat.com/errata/RHSA-2026:6475
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:6476
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:6477
access.redhat.com
and 4 more references View all →
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