CVE-2024-4520Public exploitNetwork attack vector

Chat history disclosure via exposed history directory

Published Jun 4, 2024 · Updated Oct 15, 2025

Missing authorization in GaiZhenbiao ChuanhuChatGPT before 20240919 allows remote attackers to read other users' chat histories. The Gradio launch configuration exposes the shared history directory as an allowed path, letting requests retrieve files outside the requesting user's history selection. No authentication or user interaction is required when the web service is network-reachable, and the impact is limited to disclosure of stored conversations.

CVSS severity7.5
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in GaiZhenbiao ChuanhuChatGPT before 20240919 allows remote attackers to read other users' chat histories. The Gradio launch configuration exposes the shared history directory as an allowed path, letting requests retrieve files outside the requesting user's history selection. No authentication or user interaction is required when the web service is network-reachable, and the impact is limited to disclosure of stored conversations.

The record

CVE
CVE-2024-4520
Published
Jun 4, 2024
Updated
Oct 15, 2025
Vendor
GaiZhenbiao
Product
ChuanhuChatGPT
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 4, 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=20240410
  2. Affected versionversion=unspecified <20240919

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GaiZhenbiao · ChuanhuChatGPTversion=20240410; version=unspecified <20240919

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.

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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-862Missing Authorization
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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