CVE-2024-21576Network attack vector

Unauthenticated code execution via custom-node eval calls

Published Dec 13, 2024 · Updated Dec 23, 2024

Code injection in ComfyUI Bmad Nodes allows remote attackers to execute arbitrary Python code on the server through a crafted workflow. The entrypoints for BuildColorRangeHSVAdvanced, FilterContour, and FindContour pass attacker-controlled expression strings to eval after bypassable validation. No authentication or user interaction is required, and injected code runs with the ComfyUI server process's permissions.

CVSS severity10.0
Critical
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in ComfyUI Bmad Nodes allows remote attackers to execute arbitrary Python code on the server through a crafted workflow. The entrypoints for BuildColorRangeHSVAdvanced, FilterContour, and FindContour pass attacker-controlled expression strings to eval after bypassable validation. No authentication or user interaction is required, and injected code runs with the ComfyUI server process's permissions.

The record

CVE
CVE-2024-21576
Published
Dec 13, 2024
Updated
Dec 23, 2024
Vendor
bmad4ever
Product
ComfyUI Bmad Nodes
Classifications
CWE-94, T1059.006
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 23, 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 <*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

bmad4ever · ComfyUI Bmad Nodesversion=0 <*

Published CVSS scores

10.0SnykCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
10.0SnykCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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.

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 exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.006Command and Scripting Interpreter: Python

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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