CVE-2024-5278Public exploitNetwork attack vector

Stored XSS via unrestricted file upload

Published Jun 6, 2024 · Updated Oct 15, 2025

Unrestricted file upload in GaiZhenbiao ChuanhuChatGPT before 20240919 allows remote attackers to store XSS payloads through /upload. The handle_file_upload function accepts attacker-controlled files without validating their extensions or content types, permitting HTML and Python files. No authentication is required, but browser script execution requires another user to open the stored HTML; published evidence does not establish a server-side Python execution path.

CVSS severity6.5
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in GaiZhenbiao ChuanhuChatGPT before 20240919 allows remote attackers to store XSS payloads through /upload. The handle_file_upload function accepts attacker-controlled files without validating their extensions or content types, permitting HTML and Python files. No authentication is required, but browser script execution requires another user to open the stored HTML; published evidence does not establish a server-side Python execution path.

The record

CVE
CVE-2024-5278
Published
Jun 6, 2024
Updated
Oct 15, 2025
Vendor
GaiZhenbiao
Product
ChuanhuChatGPT
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 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=all
  2. Affected versionversion=unspecified <20240919

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GaiZhenbiao · ChuanhuChatGPTversion=all; version=unspecified <20240919

Published CVSS scores

6.5huntr.devCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
6.1NISTCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
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.

Technologies

Your stack

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Your stack

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