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VULNERABILITIES

CVE-2026-9802 Details

Description

A flaw was found in Keycloak. When revokeRefreshToken=true is enabled and persistent session storage is in use, a server restart can reset internal timing mechanisms. This allows a remote attacker, who has previously captured a user's refresh token, to replay that token even after it has been revoked. Successful exploitation grants the attacker unauthorized access to the victim's account, potentially leading to information disclosure or privilege escalation.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.8 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:25097 [email protected]
https://access.redhat.com/errata/RHSA-2026:25098 [email protected]
https://access.redhat.com/errata/RHSA-2026:30049 [email protected]
https://access.redhat.com/errata/RHSA-2026:30050 [email protected]
https://access.redhat.com/security/cve/CVE-2026-9802 [email protected]Vendor Advisory

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-613Insufficient Session Expiration[email protected]

Affected Products

ProductVersions
redhat build of keycloak
All versions

CPE

  • cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:-:*:*:*

Remediation

  • No remediation found in references.

Change History

9 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-9802
NVD Published Date:
May 28, 2026
NVD Last Modified:
Jun 26, 2026
Source:
[email protected]
CVE-2026-9802 Details - Not Deferred