CVE-2025-71334Public exploitNetwork attack vector

Arbitrary file access via unvalidated chatflow identifiers

Published Jun 25, 2026 · Updated Jun 25, 2026

Path traversal in Flowise before 3.0.6 allows remote attackers to read or write arbitrary files through unauthenticated API requests. The addBase64FilesToStorage and streamStorageFile functions pass unvalidated chatflowId and chatId values into filesystem or object-key paths, allowing ../ segments to escape the intended storage namespace. The exposed routes require no authentication; arbitrary writes can alter application-accessible files and lead to code execution, while reads disclose stored data.

CVSS severity9.3
Critical
EPSS probability4.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Flowise before 3.0.6 allows remote attackers to read or write arbitrary files through unauthenticated API requests. The addBase64FilesToStorage and streamStorageFile functions pass unvalidated chatflowId and chatId values into filesystem or object-key paths, allowing ../ segments to escape the intended storage namespace. The exposed routes require no authentication; arbitrary writes can alter application-accessible files and lead to code execution, while reads disclose stored data.

The record

CVE
CVE-2025-71334
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
FlowiseAI
Product
Flowise
Classifications
CWE-73, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.0.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FlowiseAI · Flowiseversion=0 <3.0.6

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-73External Control of File Name or Path
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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