Is CVE-2025-3248 actively exploited?

Yes. KEV Intelligence tracks CVE-2025-3248 as a known exploited vulnerability. Confidence is confirmed.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2025-3248. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2025-3248 affects langflow-ai langflow. Reported affected version: 0 to <= 1.2.0.

Yes. CVE-2025-3248 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

CVE-2025-3248 Exploited in the Wild — langflow

Q: What is CVE-2025-3248?

CVE-2025-3248 is an unauthenticated 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.

Q: How should organizations remediate it?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Q: Is it in CISA KEV?

Yes. CVE-2025-3248 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2025-3248 is an unauthenticated 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...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.

Who is affected?

langflow-ai / langflow 0 to <= 1.2.0.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

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

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.

Vendor Product Affected Status

langflow-ai langflow Through 1.2.0 Affected

Published: 07 Apr 2025
Exploitation Reported: 05 May 2025
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2025-3248
GitHub — langflow-ai/langflow github.com · Patch https://github.com/langflow-ai/langflow/pull/6911
Exploit — horizon3.ai horizon3.ai · Exploit https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-spe...
GitHub — langflow-ai/langflow github.com · Release Notes https://github.com/langflow-ai/langflow/releases/tag/1.3.0

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 05 May 2025

Independent exploitation attestation added to the KEV Intelligence record.

Proof of concept available

GitHub

Recorded 27 Apr 2025

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source	Added
CISA First	2025-05-05 00:00 UTC
The Shadowserver	2026-06-01 00:00 UTC
Daily CyberSecurity	2026-06-05 09:20 UTC
CVE	2026-06-23 16:40 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

Metasploit template detected 28 Apr 2025.

View Metasploit template

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner	Reference	Detected
Metasploit	https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/langflow_unauth_rce_cve_2025_3248.rb	28 Apr 2025
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-3248.yaml	25 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.8 Critical

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

EPSS

100.0%

Weaknesses

Missing Authentication for Critical Function CWE-306

Recent mention · Tenable Blog

The Agentic AI threat cluster: Seven incidents, three actors, and what they mean for your exposure

Tenable’s Research Special Operations (RSO) team has been tracking a cluster of agentic AI threat activity since late July 2026. The Taiwan autonomous AI cyber attack confirmed what the cluster data already showed: near-autonomous offensive AI has crossed from theoretical risk...

Read full advisory

All Mentions

Recent mention · Tenable Blog

The Agentic AI threat cluster: Seven incidents, three actors, and what they mean for your exposure

Tenable Blog · 15 Aug 2026

Tenable’s Research Special Operations (RSO) team has been tracking a cluster of agentic AI threat activity since late July 2026. The Taiwan autonomous AI cyber attack confirmed what the cluster data already showed: near-autonomous offensive AI has crossed from theoretical risk to operational reality.Key TakeawaysTaiwan's Ministry of Digital Affairs confirmed a near-autonomous AI cyber attack in July 2026 in which autonomous agents mapped 21 connected government systems, compromised 85 accounts, and exfiltrated more than 2,564 personnel records in approximately four days.The Taiwan campaign...

Recent mention · Daily CyberSecurity

Teamwork Cloud RCE Vulnerability Threatens Corporate Modeling Platforms

Daily CyberSecurity · 05 Jun 2026

A critical Teamwork Cloud RCE vulnerability exposes corporate modeling architectures to full remote takeover. The software bug carries The post Teamwork Cloud RCE Vulnerability Threatens Corporate Modeling Platforms appeared first on Daily CyberSecurity. Related posts: CVE-2025-5086 (CVSS 9.0): A Critical RCE in DELMIA Apriso with Exploit Attempts Seen in the Wild Langflow Under Attacks: CVE-2025-3248 Exploited to Deliver Stealthy Flodrix Botnet RenderShock: New Zero-Click Attack Explores Hidden Vulnerabilities in OS & Enterprise Environments

Recent mention · TheHackerNews

Critical Langflow Flaw Added to CISA KEV List Amid Ongoing Exploitation Evidence

TheHackerNews · 06 May 2025

A recently disclosed critical security flaw impacting the open-source Langflow platform has been added to the Known Exploited Vulnerabilities (KEV) catalog by the U.S. Cybersecurity and Infrastructure Security Agency (CISA), citing evidence of active exploitation. The vulnerability, tracked as CVE-2025-3248, carries a CVSS score of 9.8 out of a maximum of 10.0. "Langflow contains a missing

Recent mention · All CISA Advisories

CISA Adds One Known Exploited Vulnerability to Catalog

All CISA Advisories · 05 May 2025

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2025-3248 Langflow Missing Authentication Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the...

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Langflow AI - Unauthenticated Remote Code Execution

nuclei · Created Unknown

langflow_unauth_rce_cve_2025_3248

metasploit · Created Unknown

Metasploit module for CVE-2025-3248

Timeline

From disclosure to observed exploitation

23 Jun 2026
KEV confirmed by CVE

Exploitation attested by an external source
05 Jun 2026
KEV confirmed by Daily CyberSecurity

Exploitation attested by an external source
01 Jun 2026
KEV confirmed by The Shadowserver

Exploitation attested by an external source
05 May 2025
Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
28 Apr 2025
Metasploit module available

Exploit module available
28 Apr 2025
Public PoC available

Public proof-of-concept code published
25 Apr 2025
Nuclei template available

Scanner coverage available
07 Apr 2025
CVE published

Vulnerability disclosed publicly
04 Apr 2025
CVE ID reserved

Identifier reserved by the CNA

Pro API

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Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2025-3248

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2025-3248",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.99996,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

CVE-2025-3248

What security teams need to know first

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

Tags

CVE References

Why KEV Intelligence marks this CVE as exploited

Exploited in the wild

Proof of concept available

Known exploited vulnerability sources

Operational artifacts and observed signals

Observed signals

Scanner coverage

Virtual patch status

Scanner Artifacts

Severity, weaknesses, and research context

Weaknesses

The Agentic AI threat cluster: Seven incidents, three actors, and what they mean for your exposure

All Mentions

Potential Proof of Concepts

From disclosure to observed exploitation

KEV confirmed by CVE

KEV confirmed by Daily CyberSecurity

KEV confirmed by The Shadowserver

Added to CISA KEV

Metasploit module available

Public PoC available

Nuclei template available

CVE published

CVE ID reserved

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