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TI-2026-65185 Aliases CVE-2026-101861

Langflow Code Execution via eval() in Component Input Schema

Priority LOW 11CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00197 9th percentileScored 2026-11-07
Fix Fixed langflow (langflow-ai): 1.12.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Langflowlangflow1.0.16 to before 1.12.0; 0.0.94 to before 1.12.01.12.0Patch availableCNA
  • langflow VendorLangflow Affected 1.0.16 to before 1.12.0; 0.0.94 to before 1.12.0 Fixed in 1.12.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*——Langflow
  • cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:* Versions — — ·Langflow

Remediation

  • Fix · CNA langflow (langflow-ai) Fixed in 1.12.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-101861

References

Patch 1

Advisory 1

  • TI-2026-08085 Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-00553 Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote… KEVCVSS 3.0CRITICAL 9.8
  • TI-2025-24427 Langflow <= 1.6.9 CORS Misconfiguration to Token Hijack & RCE KEVCVSS 4.0CRITICAL 9.4
  • TI-2025-02845 Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-25463 Langflow has Unauthenticated Remote Code Execution via Public Flow Build Endpoint KEVCVSS 4.0CRITICAL 9.3
  • TI-2026-39928 Authorization bypass in langflow KEVCVSS 3.1HIGH 8.4
See all 236 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences