critical9.3Known exploitedPublic exploit code
CVE-2025-3248
Langflow Missing Authentication Vulnerability
Exploited in the wild
This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2025-05-05. Federal due date: 2025-05-26.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- Langflow 1.2.x - Remote Code Execution (RCE)2025-07-16 · webapps · multiple
- Langflow 1.3.0 - Remote Code Execution (RCE)2025-04-18 · remote · multiple
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | langflow | < 1.3.0 | 1.3.0 |
| pip | langflow-base | < 0.3.0 | 0.3.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Langflow | Langflow | before 1.3.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- CISA KEV catalog
- https://github.com/advisories/GHSA-rvqx-wpfh-mfx7
- 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/pypa/advisory-database/tree/main/vulns/langflow-base/PYSEC-2026-380.yaml
- https://pypi.org/project/langflow-base
- https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/