Is CVE-2026-27966 actively exploited?

No active exploitation of CVE-2026-27966 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-27966 be exploited remotely?

Yes. CVE-2026-27966 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-27966?

CVE-2026-27966 has a CVSS score of 9.8 (CRITICAL) and an EPSS exploitation probability of 0.29%.

HOME VULNERABILITIESCVE-2026-27966

CRITICAL

CVE-2026-27966

CWE-94Published: February 26, 2026· Updated: Feb 28, 2026

9.8

CVSS v3.1

EPSS:0.31%probability of exploitation in 30 daysPercentile:53.8th

Official Description

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.8.0, the CSV Agent node in Langflow hardcodes `allow_dangerous_code=True`, which automatically exposes LangChain’s Python REPL tool (`python_repl_ast`). As a result, an attacker can execute arbitrary Python and OS commands on the server via prompt injection, leading to full Remote Code Execution (RCE). Version 1.8.0 fixes the issue.

NVD Source

Technical Analysis

CVE-2026-27966 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.