CVEvulnerability

CVE-2025-3248

9.8 CRITICAL Known exploited Published 2025-04-07 Modified 2026-10-08 Official page ↗

CISA Known Exploited Vulnerability

Langflow Missing Authentication Vulnerability — Langflow Langflow

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.

Added to KEV: 2025-05-05
Remediation due: 2025-05-26
Ransomware use: Known
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes: This vulnerability affects a common open-source project, third-party library, or a protocol used by different products. For more information, please see: https://github.com/advisories/GHSA-c995-4fw3-j39m ; https://nvd.nist.gov/vuln/detail/CVE-2025-3248

Status: Analyzed
Published: 2025-04-07
Last modified: 2026-10-08
Assigner: [email protected]
CVSS 3.1 ([email protected]): 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected]): 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses: CWE-306, CWE-94

Description

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 configurations

• langflow langflow (< 1.3.0)

Weakness · CWE (2)

CWE-306 Missing Authentication for Critical Functionality weakness
CWE-94 Improper Control of Generation of Code weakness

References