langflow-ai langflow up to 1.7.x code injection

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in langflow-ai langflow up to 1.7.x. This vulnerability affects unknown code. The manipulation results in code injection. This vulnerability is reported as CVE-2026-27966. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in langflow-ai langflow up to 1.7.x. Affected is an unknown functionality. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-27966 since 02/25/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

Upgrading to version 1.8.0 eliminates this vulnerability. Applying the patch d8c6480daa17b2f2af0b5470cdf5c3d28dc9e508 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-0558). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Open Source Langflow

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: langflow 1.8.0
Patch: d8c6480daa17b2f2af0b5470cdf5c3d28dc9e508

Timelineinfo

02/25/2026 CVE reserved
02/26/2026 +1 days Advisory disclosed
02/26/2026 +0 days VulDB entry created
03/02/2026 +4 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-3645-fxcv-hqr4
Status: Confirmed

CVE: CVE-2026-27966 (🔒)
GCVE (CVE): GCVE-0-2026-27966
GCVE (VulDB): GCVE-100-347922
CERT Bund: WID-SEC-2026-0558 - Langflow: Schwachstelle ermöglicht Codeausführung

Entryinfo

Created: 02/26/2026 07:07
Updated: 03/02/2026 12:28
Changes: 02/26/2026 07:07 (67), 03/01/2026 15:35 (1), 03/02/2026 12:28 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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