CVE-2026-8476 Details
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.
A critical remote code execution vulnerability has been identified in IBM Langflow OSS versions 1.0.0 through 1.10.0. The issue arises in the disk-based caching mechanism, where the AsyncDiskCache class improperly uses Python's pickle.loads() function to deserialize cached objects without any validation, integrity checks, or authentication. This flaw allows arbitrary code execution when malicious pickle payloads are processed. Attackers with file system access, or those who can manipulate workflow inputs, custom components, or APIs, could exploit this vulnerability to achieve complete system compromise under the Langflow server process's privileges.
Users are advised to upgrade IBM Langflow OSS to version 1.10.1.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.ibm.com/support/pages/node/7278922 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-502 | Deserialization of Untrusted Data | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| langflow langflow | >= 1.0.0, < 1.10.1 |
CPE
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| apple macos | All versions |
CPE
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| linux linux kernel | All versions |
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| microsoft windows | All versions |
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Modified | CISA-ADP |
| Jul 20, 2026 | Initial Analysis | [email protected] |
| Jul 20, 2026 | CVE Modified | CISA-ADP |
| Jul 17, 2026 | New CVE Received | [email protected] |