Vulnerability in Langflow

CVE-2026-0770

Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the exec_globals parameter provided to the validate endpoint. The issue results from the inclusion of a resource from an untrusted control sphere. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-27325.

EPSS: 0.563 (99.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-0770?
CVE-2026-0770 is a critical-severity vulnerability in Langflow, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 9.8/10. Published 2026-01-23.
How severe is CVE-2026-0770?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-0770 known to be exploited?
Yes. CVE-2026-0770 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-07-21), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.