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CVE-2026-8476 is a critical remote code execution vulnerability in IBM Langflow OSS affecting versions 1.0.0 through 1.10.0. The flaw is in the disk-based caching mechanism, where the AsyncDiskCache class deserializes cached objects from disk using Python's unsafe pickle.loads() without validation, integrity verification, or authentication. Because pickle deserialization can invoke attacker-controlled object reconstruction behavior, any malicious serialized payload reaching the cache can trigger arbitrary code execution during cache processing. The issue is remotely reachable in deployments where an attacker can influence cached data through workflow inputs, custom components, API manipulation, or other paths that affect cache contents.
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No public exploit code observed for this vulnerability.
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9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical unsafe deserialization vulnerability in Langflow OSS AsyncDiskCache that can allow arbitrary code execution via malicious pickle data.
A critical remote code execution vulnerability in IBM Langflow OSS caused by unsafe pickle deserialization in the disk-based cache mechanism.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.