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Servers and applications

CVE-2025-3248

Langflow Unauth RCE

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 5 May 2025.

Severity
Critical 9.8
Published
7 Apr 2025
Last changed
8 Oct 2026
Added to UpHeron
1 Nov 2026
Fixed in
1.3.0
Also known as
GHSA-rvqx-wpfh-mfx7
Sources
NVD, Project advisories (GitHub)

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 software

SoftwareAffected versions
LangflowServers and applications · cpe:a:langflow:langflow
  • Every version before 1.3.0
LangflowServers and applications · github:langflow-ai/langflow
  • Every version before 1.3.0

Known exploited

CISA name
Langflow Missing Authentication Vulnerability
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.
Due for US agencies
26 May 2025
Used in ransomware
Yes, known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-3248
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-3248
  • GitHub Advisory Database https://github.com/advisories/GHSA-rvqx-wpfh-mfx7
  • github.com https://github.com/langflow-ai/langflow/security/advisories/GHSA-rvqx-wpfh-mfx7