CVE-2025-3248: Langflow Unauth RCE
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.
Published Jun 17, 2025 · Updated Nov 5, 2025
Affected packages
langflow
- Ecosystem
- PyPI
- Affected
- < 1.3.0
- Fixed in
- 1.3.0
- Check
pip show langflow
langflow-base
- Ecosystem
- PyPI
- Affected
- < 0.3.0
- Fixed in
- 0.3.0
- Check
pip show langflow-base
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.
Advisory details
From the GitHub Advisory Database (CC BY 4.0).
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.
Credited to chximn-dt.
References
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-rvqx-wpfh-mfx7
- https://nvd.nist.gov/vuln/detail/CVE-2025-3248
- https://github.com/langflow-ai/langflow/pull/6911
- https://github.com/langflow-ai/langflow/commit/faac4db133de32fcb6d483fa9ff52f40ce42bdc0
- 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://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248
- https://www.vulncheck.com/advisories/langflow-unauthenticated-rce
- https://github.com/advisories/GHSA-rvqx-wpfh-mfx7
How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology
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