CVE-2024-31621Public exploitNetwork attack vector

Authentication bypass via case-mismatched API paths

Published Apr 29, 2024 · Updated Aug 2, 2024

Authentication bypass in Flowise before 1.8.1 allows remote attackers to access protected APIs through case-altered request paths. The server checks for the lowercase /api/v1/ string before applying authentication, while case-insensitive routing still resolves /API/V1/ to protected handlers. The flaw matters when application authentication is enabled and exposes administrative operations, including credential reads, to unauthenticated network clients.

CVSS severity7.6
High
EPSS probability59.87%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Flowise before 1.8.1 allows remote attackers to access protected APIs through case-altered request paths. The server checks for the lowercase /api/v1/ string before applying authentication, while case-insensitive routing still resolves /API/V1/ to protected handlers. The flaw matters when application authentication is enabled and exposes administrative operations, including credential reads, to unauthenticated network clients.

The record

CVE
CVE-2024-31621
Published
Apr 29, 2024
Updated
Aug 2, 2024
Vendor
FlowiseAI
Product
Flowise
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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 <=v.1.6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FlowiseAI · Flowiseversion=0 <=v.1.6.2

Published CVSS scores

7.6CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

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-94Improper Control of Generation of Code ('Code Injection')
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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