Is there a public exploit for CVE-2025-3248?

Yes. CVE-2025-3248 is listed in the CISA Known Exploited Vulnerabilities catalog, meaning exploitation has been observed in the wild.

Is there a proof of concept for CVE-2025-3248?

Yes — 8 proof-of-concept entries are linked on this page, from public repositories and community submissions. They are listed for authorised testing only.

How severe is CVE-2025-3248?

CVE-2025-3248 scores CVSS 9.8 (v3.1), rated critical. EPSS puts the chance of exploitation in the next 30 days at 99.99%.

What does CVE-2025-3248 affect?

CVE-2025-3248 affects Langflow Langflow. It is part of the AI and agent stack (Langflow).

9.8 Critical

Langflow versions prior to 1.3.0 are susceptible to code injection in the /api/v1/validate/code endpoint.

CVE-2025-3248 Exploited

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.

Being exploited in the wild

Catalogued 5 May 2025 · US federal remediation deadline 26 May 2025 · Known use in ransomware campaigns

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Exploit code is also public: Metasploit · Exploit-DB · Public PoC · Nuclei template

Metasploitexploit/multi/http/langflow_unauth_rce_cve_2025_3248
Exploit-DBLangflow 1.3.0 - Remote Code Execution (RCE)
Exploit-DBLangflow 1.2.x - Remote Code Execution (RCE)
NucleiLangflow AI - Unauthenticated Remote Code Execution
Public PoCynsmroztas/CVE-2025-3248-Langflow-RCE18 stars
Public PoCxuemian168/CVE-2025-324812 stars
Public PoCverylazytech/CVE-2025-324810 stars
Public PoC0-d3y/langflow-rce-exploit7 stars
Public PoChideki233/CVE-2025-3248-Langflow-RCE4 stars
Public PoCPuddinCat/CVE-2025-3248-POC3 stars
Public PoCdennisec/Mass-CVE-2025-32483 stars
Public PoCEQSTLab/CVE-2025-32483 stars

Part of the AI stack

This affects Langflow, in Agent frameworks.

Assessment

CVSS: 9.8 (v3.1)
Severity: Critical
EPSS: 99.99% chance of exploitation in the next 30 days
Known exploited: Yes — listed in the CISA KEV catalog
Exploit availability: CISA KEV, Metasploit, Exploit-DB, Public PoC, Nuclei template
Published: 7 April 2025
Last updated: 27 October 2026
Affected: Langflow · langflow-ai · Langflow · langflow · langflow · langflow-base
Weakness: CWE-306, CWE-94
Assigner: disclosure@vulncheck.com

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

At the source

References

Community proofs of concept

No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.

Submit a proof of concept

Only for publicly disclosed vulnerabilities, and only material from testing you were authorised to perform. This platform does not buy, sell, or broker exploits — see earning from vulnerability research for legitimate bounty programs. Submissions are reviewed before they appear. Text only; do not include live credentials, personal data, or anything targeting systems you are not permitted to test.

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Query this programmatically

Agents can read this through the MCP endpoint, or over HTTP:

curl https://cve.zerocrew.in/api/cve/CVE-2025-3248