CVE-2025-3248: Langflow Unauthenticated RCE

9.8 CVSS

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.

Known Exploited

🚨 Marked as known exploited on April 13th, 2025 (4 days ago).

Classification

CVE ID: CVE-2025-3248

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.8

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem Types

CWE-306 Missing Authentication for Critical Function

Affected Products

Vendor: langflow-ai

Product: langflow

Nuclei Template

http/cves/2025/CVE-2025-3248.yaml

Exploit Prediction Scoring System (EPSS)

EPSS Score: 80.22% (probability of being exploited)

EPSS Percentile: 99.03% (scored less or equal to compared to others)

EPSS Date: 2025-04-16 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-3248
https://github.com/langflow-ai/langflow/pull/6911
https://github.com/langflow-ai/langflow/releases/tag/1.3.0
https://isc.sans.edu/diary/31850
https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/

Timeline