CVE-2026-7571
HIGH EPSS 26.2%
Published May 19, 20261mo ago · Modified Jun 17, 20261w ago
7.1 CVSS 3.1
Published May 19, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago
Description
A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect (OIDC) clients. By manipulating client data during a session restart, an attacker can obtain an access token that should not be available. This vulnerability can also lead to the exposure of these access tokens in server logs, proxy logs, and HTTP Referrer headers, resulting in sensitive information disclosure.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
26.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-472
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| redhat | build_of_keycloak | * | ≥26.4 – <26.4.12 |
References 4
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:19596
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:19597
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-7571
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2464263
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.