CVE-2026-8476 IBM CVE debrief

Who should care

Users of IBM Langflow OSS 1.0.0 through 1.10.0 should apply patches or mitigations to prevent exploitation of this critical remote code execution vulnerability. Security teams and operators managing Langflow OSS deployments should review and validate affected scope, apply vendor guidance, and monitor for suspicious activity.

Technical summary

IBM Langflow OSS 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the disk-based caching mechanism. The AsyncDiskCache class uses Python's unsafe pickle.loads() function to deserialize cached objects from disk without validation, integrity verification, or authentication, enabling arbitrary code execution when malicious pickle payloads are processed. Attackers who can influence cached data through file system access, malicious workflow inputs, custom components, or API manipulation can achieve complete system compromise with the privileges of the Langflow server process.

Defensive priority

High

Recommended defensive actions

• Apply patches or updates provided by IBM to fix the vulnerability
• Implement compensating controls to restrict access to cached data
• Monitor for suspicious activity related to cached objects
• Validate and verify the integrity of cached data
• Review and validate affected scope and vendor guidance
• Track exceptions and retest remediated assets

Evidence notes

The CVE record was published on 2026-07-17T20:17:30.623Z and has not been modified since then. The NVD entry is currently Received. Evidence is limited to CVE and NVD details. Defenders should verify Langflow OSS version usage and patch status.

Official resources