CVE-2025-3248Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code
Known exploited — Langflow Missing Authentication Vulnerability
CISA confirmed this vulnerability is used in real attacks on 05.05.2025. Remediation deadline for US federal agencies: 26.05.2025.
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. This vulnerability affects a common open-source project, third-party library, or a protocol used by different products. For more information, please see: https://github.com/advisories/GHSA-c995-4fw3-j39m ; https://nvd.nist.gov/vuln/detail/CVE-2025-3248
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.
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| langflow | langflow | 0 – < 1.3.0 | |
| langflow-ai | langflow | < 1.3.0 |
References and patches
- https://github.com/langflow-ai/langflow/pull/6911 issue-trackingpatchPatch
- langflow 1.3.0 Release Notes release-notesRelease Notes
- https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in… exploitExploitThird Party Advisory
- https://www.vulncheck.com/advisories/langflow-unauthenticated-rce third-party-advisoryThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248 US Government Resource
CPE matches (NVD) (1)
cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*< 1.3.0