What is CVE-2026-8476?

CVE-2026-8476 is a critical-severity vulnerability in Ibm Langflow Oss, classified under Deserialization of Untrusted Data. CVSS score: 9.9/10. Published 2026-07-17.

How severe is CVE-2026-8476?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Deserialization in Ibm Langflow Oss

CVE-2026-8476

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…

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Ibm Langflow Oss — versions 1.0.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-8476?: CVE-2026-8476 is a critical-severity vulnerability in Ibm Langflow Oss, classified under Deserialization of Untrusted Data. CVSS score: 9.9/10. Published 2026-07-17.
How severe is CVE-2026-8476?: Critical severity. CVSS v3 base score is 9.9 out of 10.