CVE-2025-3248
Langflow Missing Authentication Vulnerability - [Actively Exploited]
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.
INFO
Published Date :
April 7, 2025, 3:15 p.m.
Last Modified :
June 17, 2026, 9:19 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
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.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Unknown
This vulnerability affects a common open-source project, third-party library, or a protocol used by different products. For more information, please see: https://github.com/advisories/GHSA-c995-4fw3-j39m ; https://nvd.nist.gov/vuln/detail/CVE-2025-3248
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update Langflow to version 1.3.0 or later.
Public PoC/Exploit Available at Github
CVE-2025-3248 has a 176 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-3248.
| URL | Resource |
|---|---|
| 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/ | Exploit Third Party Advisory |
| https://www.vulncheck.com/advisories/langflow-unauthenticated-rce | Third Party Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248 | US Government Resource |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-3248 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-3248
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Production-readiness and security scanner for LangGraph/LangChain projects. Catches known CVEs, insecure checkpointer configs, and footguns before they ship. Zero API key, fully offline.
ai-agents cli devsecops langchain langflow langgraph llm-security python sast security static-analysis supply-chain-security vulnerability-scanner
Python HTML
webwiki
A collection of CVE research, patch diff analysis, reverse engineering , exploit development notes, and PoCs
HTML Python
Field demos for JFrog Platform covering Xray, Curation, AppTrust, AI/ML, and secure SDLC workflows.
Shell Open Policy Agent Dockerfile Python Java Go C# JavaScript
None
None
Proof-of-concept for an unauthenticated remote code execution vulnerability in Bisheng, an open-source LLM DevOps platform.
Python
Curated Sigma rules + Suricata signatures for 23 published CVEs, extracted from local vulhub lab reproductions. CI-linted, MIT-licensed.
Python
Necromancer suite: hellhound (offensive security tool)
Python
Necromancer suite: miasma (offensive security tool)
Python
None
Python
Verified vulnerability journey for CVE-2025-8110 (Gogs) and CVE-2025-3248 (Langflow) — risk triage, exploitability verification, verified patches.
Procfile Shell Dockerfile Go JavaScript Less Batchfile Go Template Makefile CSS
None
Dockerfile JavaScript Python HTML CSS Shell Java
Cybersecurity research, CTF competitions, adversarial attacks，and so on
Based on multi-agent collaboration systems developed using technologies like LangFlow, LangGraph, and LangChain, the front end utilizes React, while the back end employs Python FastAPI. The large model utilizes DeepSeek and can integrate strategies such as Mem0 and reinforcement learning
Python Dockerfile Mako Batchfile Shell TypeScript CSS JavaScript HTML Makefile
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-3248 vulnerability anywhere in the article.
-
TheCyberThrone
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TheCyberThrone
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Critical Langflow Flaw CVE-2026-33017 Triggers Attacks within 20 Hours of Disclosure
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Daily CyberSecurity
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Help Net Security
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CybersecurityNews
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Daily CyberSecurity
Langflow Hit by Privilege Escalation Flaw: CVE-2025-57760
Log into UI as new superuser The Langflow project has issued an important security advisory regarding a newly discovered vulnerability that poses a severe risk to organizations deploying AI-powered wo ... Read more
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Cyber Security News
Hackers Exploiting Critical Langflow Vulnerability to Deploy Flodrix Botnet and Take System Control
Langflow, the popular Python framework for rapid AI prototyping, is under siege after researchers disclosed CVE-2025-3248, a flaw in the /api/v1/validate/code endpoint that lets unauthenticated attack ... Read more
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Dark Reading
Hackers Exploit Critical Langflow Flaw to Unleash Flodrix Botnet
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The Hacker News
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Cybersecurity researchers have called attention to a new campaign that's actively exploiting a recently disclosed critical security flaw in Langflow to deliver the Flodrix botnet malware. "Attackers u ... Read more
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Cyber Security News
Hackers Actively Exploiting Langflow RCE Vulnerability to Deploy Flodrix Botnet
Security researchers have uncovered an active cyberattack campaign targeting Langflow servers through CVE-2025-3248, a critical remote code execution vulnerability that allows threat actors to deploy ... Read more
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Trend Micro
Critical Langflow Vulnerability (CVE-2025-3248) Actively Exploited to Deliver Flodrix Botnet
Summary: Trend™ Research has identified an active campaign exploiting CVE-2025-3248 to deliver the Flodrix botnet. Attackers use the vulnerability to execute downloader scripts on compromised Langflow ... Read more
-
Daily CyberSecurity
Langflow Under Attacks: CVE-2025-3248 Exploited to Deliver Stealthy Flodrix Botnet
Trend Micro has uncovered an active and sophisticated campaign exploiting a critical remote code execution (RCE) vulnerability in Langflow, a popular open-source framework for building AI applications ... Read more
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europa.eu
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Hackread - Latest Cybersecurity, Hacking News, Tech, AI & Crypto
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Help Net Security
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The following table lists the changes that have been made to the
CVE-2025-3248 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2025-3248', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2025-08-15T19:50:13.871465Z'} -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/langflow-ai/langflow', 'vendor': 'langflow-ai', 'product': 'langflow', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.3.0', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] -
Modified Analysis by [email protected]
Nov. 06, 2025
Action Type Old Value New Value Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/langflow-unauthenticated-rce Types: Third Party Advisory -
CVE Modified by [email protected]
Nov. 04, 2025
Action Type Old Value New Value Added Reference https://www.vulncheck.com/advisories/langflow-unauthenticated-rce -
Modified Analysis by [email protected]
Oct. 31, 2025
Action Type Old Value New Value Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248 Types: US Government Resource -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 21, 2025
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 21, 2025
Action Type Old Value New Value Removed Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 21, 2025
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248 -
Initial Analysis by [email protected]
May. 07, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-94 Added CWE CWE-306 Added CPE Configuration OR *cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:* versions up to (excluding) 1.3.0 Added Reference Type VulnCheck: https://github.com/langflow-ai/langflow/pull/6911 Types: Patch Added Reference Type VulnCheck: https://github.com/langflow-ai/langflow/releases/tag/1.3.0 Types: Release Notes Added Reference Type VulnCheck: https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/ Types: Exploit, Third Party Advisory -
CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
May. 06, 2025
Action Type Old Value New Value Added Date Added 2025-05-05 Added Due Date 2025-05-26 Added 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. Added Vulnerability Name Langflow Missing Authentication Vulnerability -
CVE Modified by [email protected]
Apr. 09, 2025
Action Type Old Value New Value Added Reference https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/ -
New CVE Received by [email protected]
Apr. 07, 2025
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-306 Added Reference https://github.com/langflow-ai/langflow/pull/6911 Added Reference https://github.com/langflow-ai/langflow/releases/tag/1.3.0