CVE-2026-4981 | Red Hat Advanced Cluster Security OAuth Call error/error_uri redirect

VDB-353954 · CVE-2026-4981 · GCVE-0-2026-4981 RED HAT ADVANCED CLUSTER SECURITY OAUTH CALL ERROR/ERROR_URI REDIRECT HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.5 $5k-$25k 2.85 Summaryinfo A vulnerability was found in Red Hat Advanced Cluster Security. It has been declared as problematic. The impacted element is an unknown function of the component OAuth Call Handler. Such manipulation of the argument error/error_uri leads to redirect. This vulnerability is traded as CVE-2026-4981. The attack may be launched remotely. There is no exploit available. Detailsinfo A vulnerability, which was classified as problematic, has been found in Red Hat Advanced Cluster Security (version now known). Affected by this issue is some unknown processing of the component OAuth Call Handler. The manipulation of the argument error/error_uri with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is integrity. The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2026-4981. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/27/2026). This vulnerability is assigned to T1204.001 by the MITRE ATT&CK project. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor Red Hat Name Advanced Cluster Security 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: 3.5 VulDB Meta Temp Score: 3.5 VulDB Base Score: 3.5 VulDB Temp Score: 3.5 VulDB Vector: 🔒 VulDB Reliability: 🔍 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: Redirect CWE: CWE-601 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 03/27/2026 Advisory disclosed 03/27/2026 +0 days VulDB entry created 03/27/2026 +0 days VulDB entry last update Sourcesinfo Vendor: redhat.com Advisory: bugzilla.redhat.com Status: Confirmed CVE: CVE-2026-4981 (🔒) GCVE (CVE): GCVE-0-2026-4981 GCVE (VulDB): GCVE-100-353954 Entryinfo Created: 03/27/2026 17:12 Changes: 03/27/2026 17:12 (50) Complete: 🔍 Cache ID: 99:279:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸