CVE-2026-8922· NVD / CVE Program· CNA redhat

Org.keycloak/keycloak-services: keycloak: org.keycloak.protocol.oidc: security flaw in org.keycloak/keycloak-services

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 This allows tokens that should have been revoked to remain active, potentially leading to unauthorized access or continued session validity.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.

MediumCVSS 5.4 · v3.1—No exploit No fix recorded

GHSA-83c4-ffjp-mxp9

Published: May 19, 2026
Updated: Jul 23, 2026
EPSS: 0.3% · 23th percentile
CWE: CWE-303

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Action score

Monitor

Low priority for now.

CVSS: 21 / 40 · 5.4 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · redhat: 5.4; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

Vendor	Product	CPE
redhat	build of keycloak	cpe:2.3:a:redhat:build_of_keycloak

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

redhat build of keycloakall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

Red Hat Red Hat build of Keycloak 26.4
- 26.4.13-1 and laternot affected · rpm
- 26.4-19 and laternot affected · rpm
- 26.4-19 and laternot affected · rpm
Red Hat Red Hat build of Keycloak 26.4.13
- all versionsunknown
Red Hat Red Hat build of Keycloak 26.6
- 26.6.3-3 and laternot affected · rpm
- 26.6-6 and laternot affected · rpm
- 26.6-6 and laternot affected · rpm
Red Hat Red Hat build of Keycloak 26.6.3
- all versionsunknown

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Maven	org.keycloak:keycloak-services	up to and including 26.6.2	—

Same product

redhat: all records

Other highest-scoring records for the same primary product.

CVE-2026-16442Keycloak-services: keycloak-services: saml idp-initiated broker login bypasses link-only restriction
39Monitor
CVE-2026-16443Keycloak-services: keycloak-services: saml broker metadata import disables response signature validation
36Monitor
CVE-2026-15572Keycloak-services: keycloak-services: dcr protocol mapper type-swap policy bypass allows privilege escalation
35Monitor
CVE-2026-9704Keycloak: keycloak: privilege escalation due to oversized subject_token jwt
35Monitor
CVE-2026-3047Org.keycloak.broker.saml: keycloak saml broker: authentication bypass due to disabled saml client completing idp-initiated login
35Monitor
CVE-2023-6787Keycloak: session hijacking via re-authentication
35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Joy Gilbert and Reynaldo Immanuel

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).