#VU108680 Code Injection in Langflow - CVE-2025-3248

Vulnerability identifier: #VU108680

Vulnerability risk: Critical

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2025-3248

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Langflow
Other software / Other software solutions

Vendor: Langflow

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation within the /api/v1/validate/code endpoint. A remote non-authenticated attacker can send a specially crafted HTTP request to the affected endpoint and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Langflow: 0.0.19 - 1.2.0

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External links
https://github.com/langflow-ai/langflow/pull/6911
https://github.com/langflow-ai/langflow/releases/tag/1.3.0
https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/
https://github.com/langflow-ai/langflow/security/advisories/GHSA-rvqx-wpfh-mfx7

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.