CVE-2026-90580Network attack vector

Server-side request forgery via forwarded-header URL construction

Published Sep 13, 2026 · Updated Sep 13, 2026

Server-side request forgery in Flowise 3.0.0 through 3.0.2 allows remote attackers to trigger server-side requests via crafted headers. The Evaluations endpoint builds its base URL from the request's Host and X-Forwarded-Proto headers, then passes that URL to axios.post without constraining the destination. Reachability requires the Cloud or Enterprise Evaluations feature, and exploitation exposes network resources reachable from the Flowise server.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in Flowise 3.0.0 through 3.0.2 allows remote attackers to trigger server-side requests via crafted headers. The Evaluations endpoint builds its base URL from the request's Host and X-Forwarded-Proto headers, then passes that URL to axios.post without constraining the destination. Reachability requires the Cloud or Enterprise Evaluations feature, and exploitation exposes network resources reachable from the Flowise server.

The record

CVE
CVE-2026-90580
Published
Sep 13, 2026
Updated
Sep 13, 2026
Vendor
FlowiseAI
Product
Flowise
Classifications
T1190
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 13, 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=3.0.0
  2. Affected versionversion=3.0.1
  3. Affected versionversion=3.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

FlowiseAI · Flowiseversion=3.0.0; version=3.0.1; version=3.0.2

Published CVSS scores

No CVSS assessment is available in this record.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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