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VulnerabilityPublished Updated

CVE-2025-71334: Flowise · External Control of File Name or Path

Affects FlowiseSource CVE Database V5

0
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Public exploit available · CVSS 9.3 Critical : upgrade to 3.0.6 as a priority.

Data as of 29 Oct 2026, 20:45 UTC

CVSS 4.0 base score
9.3Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.09.3
CNA (VulnCheck)CVSS 3.19.8
CISA SSVC
Exploitation
Proof of concept is public or traded
Automatable
Attackers can reliably automate steps 1–4 of the kill chain
Technical impact
Total control over the software or total information disclosure

CISA SSVC assessment, 2026-06-26.

Patch
Available – fixed in 3.0.6
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 25 Jun 2026

  2. Weaponized: evidence found.

    CISA SSVC: proof of concept public

  3. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  4. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by VulnCheck

    , 5 days before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. CISA SSVC assessment

    proof of concept public

    , 13 hours after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA SSVC, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade Flowise to 3.0.6.

Affected software

ProductAffectedFixed in
FlowiseFlowiseAffected
  • <3.0.6
Fixed in
  • 3.0.6
npmFlowisepkg:npm/FlowiseOther threatsAffected
  • <3.0.6
Fixed in
  • 3.0.6

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

Flowise before 3.0.6 contains an arbitrary file access vulnerability due to missing validation that the chatflowId and chatId parameters are UUIDs or numbers in file handling operations. By supplying a path-traversal value (e.g., '../../../../../tmp') as the chatflow id, an unauthenticated attacker can use the /api/v1/chatflows endpoint (via addBase64FilesToStorage) to write arbitrary files, and the /api/v1/get-upload-file and /api/v1/openai-assistants-file/download endpoints (via streamStorageFile) to read arbitrary files. Arbitrary file write may lead to remote code execution.

References

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