# CVE-2025-3248: Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code

> CVE-2025-3248: Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2025-3248
Last updated: 2026-10-08T16:16:52Z

- Published: 2025-04-07 14:22 UTC · Updated: 2026-10-08 16:16 UTC · Assigner: VulnCheck
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 100.0%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2025-05-05, federal due date 2025-05-26, ransomware use: Known
- CWE: CWE-306

## 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.

## CISA 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.

## Affected vendors and products

- langflow-ai: langflow

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-3248)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-3248)
- [https://github.com/langflow-ai/langflow/pull/6911](https://github.com/langflow-ai/langflow/pull/6911)
- [https://github.com/langflow-ai/langflow/releases/tag/1.3.0](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.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/)
- [https://www.vulncheck.com/advisories/langflow-unauthenticated-rce](https://www.vulncheck.com/advisories/langflow-unauthenticated-rce)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-3248 · Markdown: https://rewindex.com/cve/CVE-2025-3248.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-3248 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:03:59.536Z