CVSS 3.1
5.4 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NCVE-2026-96460
Medium (5.4) in red hat. EPSS 0.2% estimated probability of exploitation activity in the next 30 days.
On this page
A flaw was found in the token exchange mechanism of Keycloak. When using Standard Token Exchange V2, the system issues new tokens with a fresh lifetime based on the requester clients configuration instead of limiting it to the original tokens expiration. This issue allows an authenticated requester to indefinitely extend access for service accounts by repeatedly exchanging tokens, even if the original client has been disabled by an administrator.
Severity
- EPSS
- 0.2% estimated probability of exploitation activity in the next 30 days; 15th percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-10. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-303 Incorrect Implementation of Authentication Algorithm
- OWASP Top 10
- A07:2025 Authentication Failures
- Published
- Modified
- Assigned by
- redhat (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
- red hat:red hat build of keycloak 26.6
- red hat:red hat build of keycloak 26.6.8
- red hat:red hat single sign-on 7
Versions
From the CNA's record in the CVE List.
Fixed in
| Product | Fixed in |
|---|---|
| Red Hat build of Keycloak 26.6 | 26.6.8-2 |
| Red Hat build of Keycloak 26.6 | 26.6-24 |
Red Hat
Red Hat rates this Moderate.
The Red Hat Product Security team has assessed the severity of this vulnerability as Moderate, given that exploitation requires the attacker to already possess a valid exchanged service-account token and the credentials of an authorized requester client. Successful exploitation allows an attacker to maintain persistent access to resources indefinitely, bypassing administrative revocation of the origin client. The vulnerability's root cause is the failure to bound exchanged token lifetimes by the original subject token's expiration.
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat build of Keycloak 26.6 | rhbk/keycloak-operator-bundle:26.6.8-2 | Fixed 2026-11-06 | RHSA-2026:95762 |
| Red Hat build of Keycloak 26.6 | rhbk/keycloak-rhel9:26.6-24 | Fixed 2026-11-06 | RHSA-2026:95762 |
| Red Hat build of Keycloak 26.6 | rhbk/keycloak-rhel9-operator:26.6-24 | Fixed 2026-11-06 | RHSA-2026:95762 |
| Red Hat build of Keycloak 26.6.8 | keycloak-services | Fixed 2026-11-06 | RHSA-2026:95761 |
| Red Hat build of Keycloak 26.6.8 | rhbk/keycloak-rhel9 | Fixed 2026-11-06 | RHSA-2026:95761 |
| Red Hat Single Sign-On 7 | keycloak-services | Not affected |
Contains Red Hat Security Data © Red Hat, Inc., licensed under CC BY 4.0. Source: https://access.redhat.com/security/data. Modified: reformatted. Red Hat's page for CVE-2026-96460.
Attack patterns (CAPEC)
- CAPEC-90 Reflection Attack in Authentication Protocol Likelihood: High · Severity: High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.