Actively exploited · Published Jan 23, 2026 · Assigned by zdi

CVE-2026-0770Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability

Critical 9.8 Exploited

In plain English

A critical-severity security flaw in Langflow from Langflow. Attackers are actively exploiting it in the wild (listed by CISA on July 21, 2026). The chance it is exploited in the next 30 days is estimated at 62.6% (higher than 99.2% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei, public proof-of-concept code. 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.

Severity (CVSS 3.0)9.8Critical
Exploit odds (30 days)62.6%top 0.8% of all CVEs
Exploited in the wildYesCISA KEV since Jul 21, 2026
Attack tooling3Metasploit, Nuclei, Public PoC

CISA guidance

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.

Federal agencies must remediate by Jul 24, 2026.

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
PyPIlangflowno fix listedGHSA-g22f-v6f7-2hrh
PyPIlangflowno fix listedPYSEC-2026-1525

Affected products (as reported)

VendorProductVersions
Langflow Langflow 1.4.2

Weakness: CWE-829 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References