CVE-2026-4628 | Red Hat Keycloak resource_set Endpoint access control (EUVD-2026-14389)

VDB-352500 · CVE-2026-4628 · EUVD-2026-14389 RED HAT KEYCLOAK RESOURCE_SET ENDPOINT ACCESS CONTROL HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.3 $5k-$25k 5.58+ Summaryinfo A vulnerability categorized as critical has been discovered in Red Hat Keycloak. Impacted is an unknown function of the component resource_set Endpoint. The manipulation results in access control. This vulnerability is known as CVE-2026-4628. It is possible to launch the attack remotely. No exploit is available. Detailsinfo A vulnerability was found in Red Hat Keycloak (affected version unknown). It has been classified as critical. Affected is an unknown functionality of the component resource_set Endpoint. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes: A flaw was found in Keycloak. An improper Access Control vulnerability in Keycloak’s User-Managed Access (UMA) resource_set endpoint allows attackers with valid credentials to bypass the allowRemoteResourceManagement=false restriction. This occurs due to incomplete enforcement of access control checks on PUT operations to the resource_set endpoint. This issue enables unauthorized modification of protected resources, impacting data integrity. The advisory is shared for download at access.redhat.com. This vulnerability is traded as CVE-2026-4628 since 03/23/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 03/23/2026). The MITRE ATT&CK project declares the attack technique as T1068. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. The vulnerability is also documented in the databases at EUVD (EUVD-2026-14389) and CERT Bund (WID-SEC-2026-0821). Affected Open Source Keycloak Productinfo Vendor Red Hat Name Keycloak License open-source Website Vendor: https://www.redhat.com/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.3 VulDB Meta Temp Score: 5.3 VulDB Base Score: 6.3 VulDB Temp Score: 6.3 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 4.3 CNA Vector (redhat): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Access control CWE: CWE-284 / CWE-266 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/23/2026 Advisory disclosed 03/23/2026 +0 days CVE reserved 03/23/2026 +0 days VulDB entry created 03/23/2026 +0 days VulDB entry last update Sourcesinfo Vendor: redhat.com Advisory: access.redhat.com Status: Confirmed CVE: CVE-2026-4628 (🔒) GCVE (CVE): GCVE-0-2026-4628 GCVE (VulDB): GCVE-100-352500 EUVD: 🔒 CERT Bund: WID-SEC-2026-0821 - Keycloak: Mehrere Schwachstellen Entryinfo Created: 03/23/2026 09:55 Updated: 03/23/2026 13:16 Changes: 03/23/2026 09:55 (61), 03/23/2026 10:26 (1), 03/23/2026 13:16 (7) Complete: 🔍 Cache ID: 99:3B0:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸