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CVE-2026-8476

Langflow remote code execution

9.9 CRITICALEPSS 0.97%
  1. Published17 Jul 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

Langflow≥ 1.0.0 < 1.10.1

Remediation

Fixed in
Langflow≥ 1.10.1

References

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Frequently asked

Is CVE-2026-8476 being actively exploited?

CVE-2026-8476 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.97%.

How severe is CVE-2026-8476?

CVE-2026-8476 has a CVSS 3.1 base score of 9.9, rated critical. EPSS estimates a 0.97% probability of exploitation.

Which products are affected by CVE-2026-8476?

Affected products include Langflow.

How do I fix CVE-2026-8476?

Upgrade affected software to a fixed version, for example Langflow 1.10.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.