CVE-2026-8922

🔶 medium

Summary

A flaw was found in Keycloak. When both realm-level and client-level `notBefore` revocation policies are configured, Keycloak's OpenID Connect (OIDC) Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially leading to unauthorized access or continued session validity. This could impact the security of systems utilizing Keycloak for identity and access management.

CVSS Score

5.4

Medium

EPSS Score

0.0

Exploit Probability

Published Date

2026-05-19

First Seen: 2026-05-20

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 22.8% of all 327,306 vulnerabilities in our database.

#252,580

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: May 19, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

🏆 Discovered By

Red Hat would like to thank Joy Gilbert and Reynaldo Immanuel for reporting this issue.

SSVC data provided by CISA

Last Modified 2026-06-10

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CWE IDs (Weakness Types)

CWE-303

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
redhat	build_of_keycloak	Affected	v-

🔗 References 4

https://access.redhat.com/errata/RHSA-2026:25097

https://access.redhat.com/errata/RHSA-2026:25098

https://access.redhat.com/security/cve/CVE-2026-8922

Vendor Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2479586

Issue Tracking Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	Summary	Published
CVE-2026-9791	🔶 medium	4.3	A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by acces...	2026-05-28
CVE-2026-9792	🔶 medium	6.5	A flaw was found in Keycloak's Client Policies, specifically within the `org.keycloak.protocol.oidc` component. When cer...	2026-05-28
CVE-2026-9793	🔶 medium	5.9	A flaw was found in Keycloak. When a JSON Web Encryption (JWE) encrypted request object is submitted, Keycloak may incor...	2026-05-28
CVE-2026-9794	🔶 medium	5.3	A flaw was found in Keycloak. A remote, unauthenticated attacker can exploit this vulnerability by sending specially cra...	2026-05-28
CVE-2026-9795	⚠️ high	7.3	A flaw was found in Keycloak's Fine-Grained Admin Permissions (FGAPv2) feature. An administrator with limited client man...	2026-05-28
CVE-2026-9796	🔶 medium	6.5	A flaw was found in Keycloak. An authenticated administrator with the `manage-clients` role can exploit a Time-of-check ...	2026-05-28

These CVEs affect the same products