CVE-2025-3248
CRITICAL9.8⚠ KEVEPSS 92.7%Langflow Unauth RCE
Published: 6/17/2025Modified: 4/2/2026Added to CISA KEV: 5/5/2025
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.
Affected packages (3)
- PyPI/langflowfrom 0, < 1.3.0
- PyPI/langflowfrom 0, < 1.3.0
- PyPI/langflow-basefrom 0, < 0.3.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A |
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References (10)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-3248
- PATCHhttps://github.com/langflow-ai/langflow
- WEBhttps://github.com/langflow-ai/langflow/commit/faac4db133de32fcb6d483fa9ff52f40ce42bdc0
- WEBhttps://github.com/langflow-ai/langflow/pull/6911
- WEBhttps://github.com/langflow-ai/langflow/releases/tag/1.3.0
- WEBhttps://github.com/langflow-ai/langflow/security/advisories/GHSA-rvqx-wpfh-mfx7
- WEBhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248
- WEBhttps://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai
- WEBhttps://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/
- WEBhttps://www.vulncheck.com/advisories/langflow-unauthenticated-rce