CRITICALCVSS 9.8Actively exploited · CISA KEV since 2025-05-05Vulnerability

CVE-2025-3248

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.

Properties

Euvd product
langflow
Vulnerability name
Langflow Missing Authentication Vulnerability
First seen
2026-10-08T15:21:16+00:00
Cvss score
9.8
Epss score
0.99993
Last seen
2026-10-19T12:00:27+00:00
Due date
2025-05-26
Euvd assigner
VulnCheck
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2025-05-05T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2025-05-05
Euvd base score version
3.1
Score
9.8
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
langflow-ai
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
9.8

Related Entities (13)

MENTIONED_IN (7)

→[Campaign]Unnamed campaign (ID 69bd…)
→[Campaign]ClingSTUN Turns Vulnerable Edge Devices Into Attacker Infrastructure
→[Campaign]Lunex Uses BYOVD to Disable Security Monitoring and Deploy Persistent Stealer
→[Campaign]NightLedger Backdoor Deployed in Espionage Campaign Targeting the Middle East and Africa
→[Campaign]ClickFix-Themed Campaign Deploys Starland RAT and WLDR Framework
→[Campaign]JADEPUFFER evolves: The agentic threat actor deploys ransomware built to destroy AI models
→[Campaign]CVE-2026-33017: How attackers compromised Langflow AI pipelines in 20 hours

HAS_WEAKNESS (2)

→[Weakness]Improper Control of Generation of Code ('Code Injection')
→[Weakness]Missing Authentication for Critical Function

INVOLVES (2)

←[EmergentSignal]velocity_anomaly
←[Signal]kev_added · 2025-05-05

AFFECTS_PRODUCT (1)

→[Product]cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*

DESCRIBES (1)

←[KEVEntry]Langflow Missing Authentication Vulnerability

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CVE-2025-3248 (CVSS 9.8) — Ninja Signal Threat Intelligence | Ninja Signal