CVE-2025-3248

CRITICAL

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.

CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 4/7/2025Modified: 7/14/2026

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References (5)

https://github.com/langflow-ai/langflow/pull/6911Patchhttps://github.com/langflow-ai/langflow/releases/tag/1.3.0Release Noteshttps://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/ExploitThird Party Advisoryhttps://www.vulncheck.com/advisories/langflow-unauthenticated-rceThird Party Advisoryhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248US Government Resource