CrowdSec
4/10CrowdSec Score

Langflow - RCE (CVE-2025-3248)

Published on07-04-2025
First seen on07-05-2025

171Exploiting IPs reported

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.

CrowdSec analysis

CVE-2025-3248 is a critical vulnerability in Langflow that allows unauthenticated remote code execution through a code injection flaw in a validation endpoint.

CrowdSec has been tracking this vulnerability and its exploits since 31st of March 2025.

Insights from the CrowdSec network reveal that the attackers trying to exploit CVE-2025-3248 are composed of a fairly even mix of opportunistic and targeted actors. Some attackers employ preliminary reconnaissance, while others use indiscriminate scanning. Data from the CrowdSec community also indicates a gradual decrease in attacks targeting CVE-2025-3248. While still present in the wild, exploitation levels have dropped noticeably week-over-week. This may signal that the vulnerability is becoming less relevant or that defenses are improving fast enough for attackers to lose interest.

Observed exploitation attempts are aimed at URLs containing /api/v1/validate/code.

Exploitation

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Detected IPs

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Protection

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Blocklist

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