Remote Code Execution Vulnerability in Langflow by Root
CVE-2026-0770

9.8CRITICAL

Key Information:

Vendor

Langflow

Status
Langflow
Vendor
CVE Published:
23 January 2026

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 11%

What is CVE-2026-0770?

A vulnerability exists in Langflow that allows remote attackers to execute arbitrary code without authentication. The flaw is rooted in the improper handling of the exec_globals parameter at the validate endpoint, resulting in the dynamic inclusion of resources from untrusted sources. Attackers can exploit this vulnerability to execute commands within the context of the root user, posing a significant risk to the integrity and security of affected systems. Further information on this vulnerability can be found in the advisory ZDI-26-036.

Affected Version(s)

Langflow 1.4.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-0770-PoC
Created by affix

CVE-2026-0770
Created by 0xgh057r3c0n

References

https://www.zerodayinitiative.com/advisories/ZDI-26-036/
x_research-advisory

EPSS Score

11% chance of being exploited in the next 30 days.

CVSS V3.0

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.