CVE-2025-3248

Known Exploited Public Exploit
Langflow Unauth RCE

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.

Categories

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 90.77% Top 5%
KEV Since 
Third-Party Advisory horizon3.ai
Affected: langflow-ai langflow
Published at:
Updated at:

References

Link Tags
https://github.com/langflow-ai/langflow/pull/6911 patch
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/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2025-3248?
CVE-2025-3248 has been scored as a critical severity vulnerability.
How to fix CVE-2025-3248?
To fix CVE-2025-3248, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-3248 being actively exploited in the wild?
It is confirmed that CVE-2025-3248 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~91% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-3248?
CVE-2025-3248 affects langflow-ai langflow.
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