CVE-2026-12359 in Security Verify Access
Summary
by MITRE • 08/12/2026
IBM Security Verify Access 10.0 through 10.0.9.2 and IBM Verify Identity Access 11.0 through 11.0.3 and IBM Verify Identity Access Container 11.0 through 11.0.3 could allow a remote attacker to access sensitive information due to an inconsistent interpretation of an HTTP request by a reverse proxy.
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Analysis
by VulDB Data Team • 08/12/2026
This vulnerability affects IBM Security Verify Access and IBM Verify Identity Access products across multiple versions, presenting a significant security risk through inconsistent HTTP request handling by reverse proxy components. The flaw stems from how these systems process incoming HTTP requests through their reverse proxy implementations, creating opportunities for attackers to exploit discrepancies in request interpretation that could lead to unauthorized access to sensitive data.
The technical nature of this vulnerability involves an inconsistent interpretation of HTTP requests within the reverse proxy layer, which serves as a critical gateway between external clients and internal backend services. When a reverse proxy processes HTTP requests, it must properly parse and forward these requests while maintaining security boundaries. In affected versions, the proxy fails to consistently interpret certain request parameters or headers, potentially allowing attackers to craft malicious requests that bypass normal access controls or manipulate request routing.
From an operational perspective, this vulnerability could enable remote attackers to gain unauthorized access to sensitive information within systems protected by these IBM security products. The impact extends beyond simple data exposure as it represents a fundamental breakdown in the security infrastructure's ability to properly validate and process incoming requests. Attackers could potentially exploit this inconsistency to escalate privileges, access restricted resources, or perform unauthorized operations against systems protected by the vulnerable software.
The vulnerability aligns with common weakness categories identified in the CWE database, specifically relating to improper handling of HTTP requests and inconsistent interpretation of security parameters within proxy implementations. This type of flaw often maps to ATT&CK techniques involving initial access through web application attacks and privilege escalation via protocol manipulation. Organizations using these IBM products face increased risk of data breaches and unauthorized system access when this vulnerability remains unpatched.
Effective mitigation strategies include applying the latest security patches provided by IBM, implementing additional network controls such as web application firewalls, and conducting thorough security assessments of proxy configurations. Organizations should also review their reverse proxy implementations to ensure consistent request handling across all components and consider implementing additional logging and monitoring for suspicious HTTP request patterns that might indicate exploitation attempts.
The broader implications extend to organizations relying on reverse proxy technologies for security boundary enforcement, highlighting the critical importance of consistent security implementation across all layers of network infrastructure. This vulnerability demonstrates how seemingly minor inconsistencies in request processing can create substantial security risks that compromise entire security architectures protecting sensitive information assets.