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Fencer Intel
medium 6.5

CVE-2026-9792 json

Keycloak: keycloak: security restriction bypass allows unauthorized ropc token acquisition

published 5mo ago modified 16d ago also GHSA-33j3-g875-37rp , EUVD-2026-32708

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

A flaw was found in Keycloak's Client Policies, specifically within the `org.keycloak.protocol.oidc` component. When certain condition providers (client-type, client-roles, client-attributes, client-scopes) are used to enforce security restrictions, the `reject-ropc-grant` executor is silently bypassed. This allows an unauthenticated remote attacker to obtain tokens via a Resource Owner Password Credentials (ROPC) grant, even when a policy is explicitly configured to block it. This bypass can lead to unauthorized access and information disclosure.

Patch / fix

  • maven org.keycloak:keycloak-services 26.6.3
  • Red Hat Red Hat build of Keycloak 26.4 26.4-19, 26.4.13-1
  • Red Hat Red Hat build of Keycloak 26.6 26.6-6, 26.6.3-3

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-9792 updated cvss 6.5

keycloak: Keycloak: Security restriction bypass allows unauthorized ROPC token acquisition

  • Red Hat build of Keycloak 26.4 rhbk/keycloak-rhel9 26.4-19, rhbk/keycloak-rhel9-operator 26.4-19, rhbk/keycloak-operator-bundle 26.4.13-1
    fixed: vendor fix RHSA-2026:30050
  • Red Hat build of Keycloak 26.4.13
    fixed: vendor fix RHSA-2026:30049
  • Red Hat build of Keycloak 26.6 rhbk/keycloak-rhel9 26.6-6, rhbk/keycloak-rhel9-operator 26.6-6, rhbk/keycloak-operator-bundle 26.6.3-3
    fixed: vendor fix RHSA-2026:25097
  • Red Hat build of Keycloak 26.6.3
    fixed: vendor fix RHSA-2026:25098

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
5mo ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.keycloak:keycloak-services
>=26.5.0, <26.6.3
<=26.4.7
26.6.3

Affected products

  • Red Hat Red Hat build of Keycloak 26.4
  • Red Hat Red Hat build of Keycloak 26.4.13
  • Red Hat Red Hat build of Keycloak 26.6
  • Red Hat Red Hat build of Keycloak 26.6.3

Classification

Weakness
  • CWE-280 Improper Handling of Insufficient Permissions or Privileges

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.