CVEvulnerability
CVE-2026-7571
7.1 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-05-19
- Last modified
- 2026-10-26
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
- Weaknesses
- CWE-472
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.
Affected configurations
• redhat build of keycloak (>= 26.4 < 26.4.12)
Related
Weakness · CWE (1)
- CWE-472 External Control of Assumed-Immutable Web Parameter weakness
References
- https://access.redhat.com/errata/RHSA-2026:19596 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:19597 Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-7571 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2464263 Vendor Advisory