CVE-2024-8400Public exploitNetwork attack vector

Authenticated browser script execution via uploaded HTML

Published Mar 20, 2025 · Updated Mar 20, 2025

Stored XSS in GaiZhenbiao ChuanhuChatGPT before 20240410 allows remote authenticated users to run JavaScript via uploaded HTML files. The bundled Gradio 3.44.0 file-handling path permits uploaded HTML containing embedded script to execute when the file is accessed; the upstream patch replaces that dependency with Gradio 4.26.0. Low-privilege application access is required to store the file, and a separate user must access it before script execution occurs.

CVSS severity5.4
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in GaiZhenbiao ChuanhuChatGPT before 20240410 allows remote authenticated users to run JavaScript via uploaded HTML files. The bundled Gradio 3.44.0 file-handling path permits uploaded HTML containing embedded script to execute when the file is accessed; the upstream patch replaces that dependency with Gradio 4.26.0. Low-privilege application access is required to store the file, and a separate user must access it before script execution occurs.

The record

CVE
CVE-2024-8400
Published
Mar 20, 2025
Updated
Mar 20, 2025
Vendor
GaiZhenbiao
Product
ChuanhuChatGPT
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <20240410

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GaiZhenbiao · ChuanhuChatGPTversion=unspecified <20240410

Published CVSS scores

5.4huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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