CVE-2024-8883: Keycloak: vulnerable redirect uri validation results in open redirec

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-09-19 · updated 2026-08-04
Weakness: CWE-601

Description

A misconfiguration flaw was found in Keycloak. This issue can allow an attacker to redirect users to an arbitrary URL if a 'Valid Redirect URI' is set to http://localhost or http://127.0.0.1, enabling sensitive information such as authorization codes to be exposed to the attacker, potentially leading to session hijacking.

Affected products

Red Hat build of Keycloak 26.4: all versions
Red Hat OpenShift Container Platform 4.18: 4.11, 4.12
RedHat Openshift Container Platform For Ibm Z: 4.9, 4.10
RedHat Openshift Container Platform For Linuxone: 4.9, 4.10
RedHat Openshift Container Platform For Power: 4.9, 4.10
Red Hat Single Sign-On: 7.6

References

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