CVE-2026-7571
HIGH
MEDIUM
Priority: 0.03
BB Relevance:
64/100
Published: 2026-05-19
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Interaction
Conf. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
Low
A:
None
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| redhat | build_of_keycloak | 26.4 – 26.4.12 |
References & Advisories (4)
Vendor Advisory
Vendor Advisory
Vendor Advisory
Vendor Advisory