CVE-2026-11888: IBM Security Verify Access Information Disclosure

CVE-2026-11888 is an information disclosure vulnerability in IBM Security Verify Access versions 10.0 through 10.0.9.2 and IBM Verify Identity Access 11.0 through 11.0.3 that exposes sensitive data to unauthorized parties. This article covers technical details, affected versions, security impact, and recommended mitigation strategies.

CVE-2026-11888 Overview

CVE-2026-11888 is an information disclosure vulnerability affecting IBM Security Verify Access and IBM Verify Identity Access. The flaw impacts IBM Security Verify Access versions 10.0 through 10.0.9.2 and IBM Verify Identity Access versions 11.0 through 11.0.3, including their container editions. A remote, unauthenticated attacker can retrieve sensitive information from affected deployments over the network. IBM published a security advisory describing the issue and corresponding fixes.

Critical Impact
An unauthenticated remote attacker can access sensitive data from identity and access management infrastructure, which can enable follow-on compromise of federated applications and user accounts.

Affected Products

IBM Security Verify Access 10.0 through 10.0.9.2 (including container edition)
IBM Verify Identity Access 11.0 through 11.0.3 (including container edition)
Deployments exposing the vulnerable interface to untrusted networks

Discovery Timeline

2026-10-08 - CVE-2026-11888 published to NVD
2026-10-10 - Last updated in NVD database

Technical Details for CVE-2026-11888

Vulnerability Analysis

IBM Security Verify Access and IBM Verify Identity Access provide centralized authentication, authorization, and single sign-on for enterprise applications. The vulnerability allows a remote attacker to retrieve information that should remain protected, with no authentication or user interaction required. Because these products broker access to downstream applications, exposed data can be used to pivot into protected services or map the identity environment.

The NVD entry classifies the issue under CWE-94 (Improper Control of Generation of Code). IBM, however, describes the issue as information disclosure, and the CVSS vector reflects a confidentiality-only impact with no effect on integrity or availability. Administrators should treat the IBM advisory as the authoritative description of root cause.

Root Cause

IBM has not publicly disclosed the specific component or input path responsible for the disclosure. Refer to the IBM Security Advisory for product-specific technical details and the exact affected modules.

Attack Vector

The attack vector is network-based with low complexity, requires no privileges, and no user interaction. An attacker reaches the vulnerable interface over the network and issues a crafted request that returns sensitive data. No verified public proof-of-concept or exploit code is listed in Exploit-DB, and the CISA KEV catalog does not list this CVE. The current EPSS probability is approximately 0.17%.

No verified exploit code is available. See the IBM Security Advisory for technical details.

Detection Methods for CVE-2026-11888

Indicators of Compromise

Unexpected or repeated anonymous HTTPS requests to IBM Security Verify Access or IBM Verify Identity Access management and runtime endpoints
Outbound responses from the appliance that are unusually large for unauthenticated sessions
Access patterns originating from non-corporate IP ranges targeting Verify Access reverse proxy or administrative URIs

Detection Strategies

Baseline normal unauthenticated request traffic to the Verify Access front end and alert on deviations in volume or URI distribution
Enable verbose access logging on the reverse proxy and forward logs to a SIEM for anomaly analysis
Correlate IBM Verify Access logs with downstream application authentication logs to identify suspicious session or token reuse

Monitoring Recommendations

Ingest IBM Security Verify Access and IBM Verify Identity Access logs into a centralized SIEM for correlation with identity provider telemetry
Monitor for scanning activity targeting known Verify Access endpoints from external IP space
Track configuration changes and new administrative sessions on affected appliances

How to Mitigate CVE-2026-11888

Immediate Actions Required

Apply the fixes referenced in the IBM Security Advisory for your product version
Inventory all IBM Security Verify Access and IBM Verify Identity Access instances, including container deployments, and verify installed versions
Restrict network exposure of management and runtime interfaces to trusted administrative networks
Review access logs for anomalous unauthenticated requests predating the patch

Patch Information

IBM has published remediation guidance in the IBM Security Advisory. Upgrade IBM Security Verify Access beyond 10.0.9.2 and IBM Verify Identity Access beyond 11.0.3 as directed by IBM. Container deployments must be rebuilt from fixed images and redeployed.

Workarounds

Place IBM Verify Access behind a web application firewall and restrict inbound access to known administrative and client IP ranges
Disable or firewall any Verify Access interfaces that are not required for production operation
Rotate credentials, secrets, and session material that may have been exposed through the vulnerable interface after patching

bash

# Example: restrict inbound access to IBM Verify Access management interface
# Replace 10.0.0.0/24 with your administrative network and <verify-access-ip> with the appliance address
iptables -A INPUT -p tcp -s 10.0.0.0/24 -d <verify-access-ip> --dport 443 -j ACCEPT
iptables -A INPUT -p tcp -d <verify-access-ip> --dport 443 -j DROP