CVE-2026-101861Langflow Code Execution via eval() in Component Input Schema
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No exploitation reported and no EPSS estimate yet.
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Langflow 1.0.16 before 1.12.0 and 0.0.94 before 1.12.0 contain an unsafe eval() vulnerability in schema.py that allows authenticated attackers to achieve code execution by placing a Python object with a malicious __repr__ method into component input options lists. The eval() sink is triggered when a component is converted into a LangChain tool via ComponentToolkit.get_tools(), including during custom component saves through the API, by interpolating options into a Literal type string that is passed directly to eval() without safe evaluation controls.
- CVSS
- 4.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
- Weakness (CWE)
- CWE-95, CWE-94
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
langflow-ai langflow langflow_ai:langflow (from the name) | from 1.0.16 before 1.12.0; from 0.0.94 before 1.12.0 | CNA record |
References
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-33p4-w7j3-33mwvendor-advisory
- https://github.com/langflow-ai/langflow/releases#release-v1.12.0release-notes, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.