CVE-2025-3248

Warning

Media report

Exploit

EPSS 99.99%
Published 07.04.2025 14:22:38
Last modified 14.07.2026 23:17:27
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Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code

Langflow versions prior to 1.3.0 are susceptible to code injection in 
the /api/v1/validate/code endpoint. A remote and unauthenticated attacker can send crafted HTTP requests to execute arbitrary
code.

Affected products Warnings 1 Metrics 3 CWE 2 References 20

NVD 1 VulnDex Vulnerability Enrichment 0

Data is provided by the National Vulnerability Database (NVD)

Langflow ≫ Langflow Version < 1.3.0

05.05.2025: CISA Known Exploited Vulnerabilities (KEV) Catalog

Langflow Missing Authentication Vulnerability

Vulnerability

Langflow contains a missing authentication vulnerability in the /api/v1/validate/code endpoint that allows a remote, unauthenticated attacker to execute arbitrary code via crafted HTTP requests.

Description

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Required actions

EPSS Metrics
Type	Source	Score	Percentile
EPSS	FIRST.org	99.99%	1

CVSS Metrics
Source	Base Score	Exploit Score	Impact Score	Vector string
nvd@nist.gov	9.8	3.9	5.9	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
disclosure@vulncheck.com	9.8	3.9	5.9	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-306 Missing Authentication for Critical Function

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

CWE-94 Improper Control of Generation of Code ('Code Injection')

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.