PT-2026-41877 · Red Hat · Keycloak

Osidb Bzimport · CVE-2026-4630 · Published 2026-05-19 · Updated 2026-06-03

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Keycloak (affected versions not specified)

Description An Insecure Direct Object Reference (IDOR) flaw exists in the Authorization Services Protection API endpoint. An authenticated client can bypass authorization checks by providing the unique identifier (UUID) of a resource belonging to a different Resource Server within the same realm. This allows unauthorized GET, PUT, and DELETE operations, which can result in information disclosure or the unauthorized modification and deletion of data.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-4630

GHSA-C739-F6XW-6PV2

Affected Products

Keycloak

References · 14

• https://access.redhat.com/security/cve/CVE-2026-4630 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2450245 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-4630 · Security Note
• https://access.redhat.com/errata/RHSA-2026:19597 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-c739-f6xw-6pv2 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:19596 · Vendor Advisory
• https://github.com/keycloak/keycloak · Note
• https://github.com/keycloak/keycloak/issues/49115 · Note
• https://github.com/keycloak/keycloak/commit/4e9b17cbedb828b4afc6b62399eee317d4735234 · Note
• https://github.com/keycloak/keycloak/commit/1192267af8f16a7b722bdc2abbd3410c477388aa · Note
• https://github.com/keycloak/keycloak/commit/0cea089bd19f5061f5fd47099fd6fb41a17d8c55 · Note
• https://github.com/keycloak/keycloak/pull/49121 · Note
• https://t.me/cveNotify/165859 · Telegram Post
• https://twitter.com/dailycve/status/2062320021162881271 · Twitter Post