Confirmed as exploited
Langflow Unauth RCE
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.
01 / ACTION
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.
02 / AFFECTED SOFTWARE
Affected packages
148 explicit affected versions
93 explicit affected versions
253 explicit affected versions
253 explicit affected versions
93 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
Langflow contains a missing authentication vulnerability in the /api/v1/validate/code endpoint that allows a remote, unauthenticated attacker to execute arbitrary code via crafted HTTP requests.
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.
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.
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.
05 / REFERENCES
Further evidence
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/3xxx/CVE-2025-3248.json
- https://github.com/langflow-ai/langflow
- https://github.com/langflow-ai/langflow/pull/6911
- https://github.com/langflow-ai/langflow/releases/tag/1.3.0
- https://nvd.nist.gov/vuln/detail/CVE-2025-3248
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248
- https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/
- https://www.vulncheck.com/advisories/langflow-unauthenticated-rce
- https://github.com/advisories/GHSA-rvqx-wpfh-mfx7
- https://github.com/langflow-ai/langflow/commit/faac4db133de32fcb6d483fa9ff52f40ce42bdc0
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-rvqx-wpfh-mfx7
- 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