CVE-2025-26319Known exploitationPublic exploitNetwork attack vector

Unauthenticated file overwrite via unsanitized path parameters

Published Mar 4, 2025 · Updated Mar 5, 2025

Path traversal in FlowiseAI Flowise 2.2.6 allows remote attackers to overwrite arbitrary server files through the attachments API. The unauthenticated route passes attacker-controlled chatflowId and chatId values to path.join in addArrayFilesToStorage without sanitizing them. Local storage, the default backend, permits traversal outside the upload directory and replacement of sensitive files such as the API-key store.

CVSS severity9.8
Critical
EPSS probability55.87%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in FlowiseAI Flowise 2.2.6 allows remote attackers to overwrite arbitrary server files through the attachments API. The unauthenticated route passes attacker-controlled chatflowId and chatId values to path.join in addArrayFilesToStorage without sanitizing them. Local storage, the default backend, permits traversal outside the upload directory and replacement of sensitive files such as the API-key store.

The record

CVE
CVE-2025-26319
Published
Mar 4, 2025
Updated
Mar 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.9GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.3FlowiseAICVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

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

Reported exploitation

Technologies

Your stack

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Your stack

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