CVE-2026-7507

A session fixation vulnerability was found in Keycloak's login-actions endpoints. An unauthenticated attacker could exploit this flaw by pre-creating an authentication session and tricking a victim into visiting a maliciously crafted link. By leveraging the /login-actions/restart endpoint—which processes session handles without adequate CSRF protection or cookie ownership validation—an attacker can reset the authentication flow state. This causes Single Sign-On (SSO) to authenticate the victim transparently upon clicking the link, allowing the attacker to hijack the required-action form without needing the victim's credentials. A successful exploit could lead to complete account takeover, including highly privileged administrative accounts.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:19594	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19595	Vendor Advisory
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-2026-7507	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2464145	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19594	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19595	Vendor Advisory
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-2026-7507	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2464145	Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7507.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-19 12:16

Updated : 2026-07-15 01:17

NVD link : CVE-2026-7507

Mitre link : CVE-2026-7507

CVE.ORG link : CVE-2026-7507

JSON object : View

Products Affected

redhat

build_of_keycloak

CWE

CWE-290

Authentication Bypass by Spoofing

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