CVE-2026-12762: IBM Cloud Pak Information Disclosure Flaw

CVE-2026-12762 Overview

CVE-2026-12762 is an information disclosure vulnerability in IBM Cloud Pak for Business Automation. The flaw allows a remote, unauthenticated attacker to obtain sensitive information exposed in manifest files. The issue affects IBM Cloud Pak for Business Automation versions 24.0.0, 24.0.1, 25.0.0, and 26.0.0. The vulnerability is categorized under [CWE-538] (Insertion of Sensitive Information into Externally-Accessible File or Directory).

Critical Impact
Remote unauthenticated attackers can retrieve sensitive data from manifest files, potentially aiding reconnaissance and follow-on attacks against enterprise automation deployments.

Affected Products

IBM Cloud Pak for Business Automation 24.0.0
IBM Cloud Pak for Business Automation 24.0.1
IBM Cloud Pak for Business Automation 25.0.0
IBM Cloud Pak for Business Automation 26.0.0

Discovery Timeline

2026-08-05 - CVE CVE-2026-12762 published to NVD
2026-08-05 - Last updated in NVD database

Technical Details for CVE-2026-12762

Vulnerability Analysis

CVE-2026-12762 exposes sensitive information through manifest files served by IBM Cloud Pak for Business Automation. Manifest files typically describe deployment configurations, component versions, service references, and internal metadata. When accessible to unauthenticated remote clients, these files leak deployment-specific details that attackers use for reconnaissance.

The vulnerability is confidentiality-only. Integrity and availability of the platform are not directly impacted. However, the disclosed metadata can support targeted attacks against related endpoints and services. An attacker chains this information with other issues to escalate access or map internal architecture.

Root Cause

The root cause is improper access control on manifest resources. The application places sensitive information into files that are reachable from the network without authentication. This maps to [CWE-538], where sensitive data is inserted into externally accessible files. Development teams often expose manifest files to support tooling and diagnostics, but fail to strip internal identifiers, hostnames, or version details before deployment.

Attack Vector

The attack requires only network access to the target Cloud Pak endpoint. No credentials, privileges, or user interaction are needed. An attacker issues HTTP requests to known manifest paths and parses the response for internal deployment data. Refer to the IBM Support Document for authoritative technical details.

No verified public proof-of-concept exploit is available at the time of publication. The vulnerability manifests through direct retrieval of exposed manifest files; no crafted payload is required.

Detection Methods for CVE-2026-12762

Indicators of Compromise

Unauthenticated HTTP GET requests targeting manifest file paths on Cloud Pak for Business Automation endpoints.
Repeated requests from a single external source enumerating static resource directories.
Access log entries showing successful 200 OK responses to manifest resources from external IP ranges.

Detection Strategies

Review web server and reverse proxy logs for anomalous access patterns to manifest and metadata files.
Deploy web application firewall (WAF) rules that block unauthenticated access to known manifest resource paths.
Correlate reconnaissance activity against Cloud Pak endpoints with subsequent authentication attempts or API calls.

Monitoring Recommendations

Alert on external requests to internal deployment metadata endpoints, especially outside expected client IP ranges.
Baseline normal access to manifest resources and flag deviations by volume or source geography.
Ingest Cloud Pak access logs into a centralized SIEM for cross-correlation with identity and network telemetry.

How to Mitigate CVE-2026-12762

Immediate Actions Required

Apply the fixes described in the IBM Support Document for CVE-2026-12762.
Restrict network access to Cloud Pak for Business Automation management interfaces using firewall rules or network policies.
Audit exposed manifest files and remove sensitive fields such as internal hostnames, credentials, and version identifiers.

Patch Information

IBM has published remediation guidance for CVE-2026-12762 covering versions 24.0.0, 24.0.1, 25.0.0, and 26.0.0. Administrators should consult the IBM Support Document for the exact fix packs or interim fixes applicable to each supported version.

Workarounds

Place Cloud Pak for Business Automation behind an authenticating reverse proxy that blocks unauthenticated access to manifest paths.
Configure ingress controllers or WAF policies to deny external requests to static manifest resources.
Limit exposure of the platform to trusted internal networks or VPN-connected clients until patches are applied.

bash

# Example Kubernetes NetworkPolicy restricting ingress to Cloud Pak namespace
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: restrict-cp4ba-ingress
  namespace: cp4ba
spec:
  podSelector: {}
  policyTypes:
    - Ingress
  ingress:
    - from:
        - ipBlock:
            cidr: 10.0.0.0/8