CVE-2025-3248
Langflow Unauth RCE
9.8
CRITICAL
CVSS 3.1
⚠ KEVEPSS 92.7%
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.
How to fix CVE-2025-3248
To remediate CVE-2025-3248, upgrade the affected package to a fixed version below.
- PyPI/langflow—upgrade to 1.3.0 or later
- —upgrade to 1.3.0 or later
- —upgrade to 0.3.0 or later
Is CVE-2025-3248 being exploited?
Yes — CVE-2025-3248 is on the CISA Known Exploited Vulnerabilities (KEV) catalog. Patch immediately.
Affected packages (3)
- from 0, < 1.3.0
- from 0, < 1.3.0
- from 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 |