Vulnerability details
CVE-2025-3248
Actively exploited
langflow-ai langflow
Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code
CVSS 3.1
9.8Critical
Remedy
Required action (CISA): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (due: 2025-05-26)
Versions not listed as affected in the CVE record:
- langflow — version 1.3.0 and later
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| langflow-ai | langflow | v < 1.3.0 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://github.com/langflow-ai/langflow/pull/6911 issue-trackingpatch
- https://github.com/langflow-ai/langflow/releases/tag/1.3.0 release-notes
- https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/ exploit
- https://www.vulncheck.com/advisories/langflow-unauthenticated-rce third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248 government-resource
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Details
- Published
- 2025-04-07
- Last updated
- 2026-11-08
- State
- Published
- Assigner (CNA)
- VulnCheck
- Kolun priority
- 90 · Critical
CISA KEV catalog
- Date added
- 2025-05-05
- Due date
- 2025-05-26
- Used in ransomware
- Yes
Exploit prediction (EPSS)
99.99%
Probability of exploitation in 30 days
99.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-306Missing Authentication for Critical Function