CVE-2026-9792: Red Hat build of Keycloak 26.4 · Improper Handling of Insufficient Permissions or Privileges
Affects Red Hat build of Keycloak 26.4Source CVE Database V5
Not known to be exploited · CVSS 6.5 Medium.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 18% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 28 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red HatRed Hat build of Keycloak 26.4 | Affected– | Fixed in– |
| Red HatRed Hat build of Keycloak 26.4 | Affected– | Fixed in– |
| Red HatRed Hat build of Keycloak 26.4.13 | Affected– | Fixed in– |
| Red HatRed Hat build of Keycloak 26.6 | Affected– | Fixed in– |
| Red HatRed Hat build of Keycloak 26.6 | Affected– | Fixed in– |
| Red HatRed Hat build of Keycloak 26.6.3 | Affected– | Fixed in– |
AI-suggested
Red Hat has released updated Keycloak 26.6.3 images that fix this vulnerability. Users should upgrade to Red Hat build of Keycloak 26.6.3 or later to remediate this issue. Before applying the update, back up existing installations, including applications, configuration files, and databases. Patch status is confirmed by the vendor advisory. No alternative mitigations or workarounds are specified in the advisory.
Description
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.
References
- access.redhat.com/errata/RHSA-2026:25097 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:25098 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:30049 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:30050 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-9792 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2482459 (opens in a new tab)