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Medium

A Regular Expression Denial of Service (ReDoS) vulnerability exists in gaizhenbiao/chuanhuchatgpt, as of commit 20b2e02. The server uses the regex pattern `r'<[^>]+>'` to parse user input. In Python's

  • Disclosed: 20.03.2025
  • Updated: 11.10.2026 12:19

A Regular Expression Denial of Service (ReDoS) vulnerability exists in gaizhenbiao/chuanhuchatgpt, as of commit 20b2e02. The server uses the regex pattern r'<[^>]+>' to parse user input. In Python's default regex engine, this pattern can take polynomial time to match certain crafted inputs. An attacker can exploit this by uploading a malicious JSON payload, causing the server to consume 100% CPU for an extended period. This can lead to a Denial of Service (DoS) condition, potentially affecting the entire server.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) chuanhuchatgpt <= 2024-09-19 no fix

References

CVSS score 6.5/10
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
-
Platform
Python (PyPI)
Package
chuanhuchatgpt
Disclosed
20.03.2025
Updated
11.10.2026 12:19

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2025-94 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: chuanhuchatgpt

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (21) in the archive
Total entries
21
First → latest
04.2024 03.2025
Without a fix
21
Exploited in attacks
0

Severity breakdown

  • Critical 4
  • High 9
  • Medium 8

Disclosures per year

Severity:
  1. An authentication bypass vulnerability exists in gaizhenbiao/ChuanhuChatGPT, as of commit 3856d4f, allowing any user to read and delete other users' chat history. The vulnerability arises because the
    High · 8.1 CVE-2024-9216 <= 2024-12-04 no fix
  2. A vulnerability in gaizhenbiao/chuanhuchatgpt version 20240802 allows attackers to access, copy, and delete other users' chat histories. This issue arises due to improper handling of session data and
    High · 8.8 CVE-2024-8613 <= 20240802 no fix
  3. A Regular Expression Denial of Service (ReDoS) vulnerability exists in gaizhenbiao/chuanhuchatgpt, as of commit 20b2e02. The server uses the regex pattern `r'<[^>]+>'` to parse user input. In Python's this entry
    Medium · 6.5 CVE-2024-10955 <= 2024-09-19 no fix
  4. An unauthenticated Denial of Service (DoS) vulnerability was identified in ChuanhuChatGPT version 20240918, which could be exploited by sending large data payloads using a multipart boundary. Although
    High · 7.5 CVE-2024-10650 <= 20240918 no fix
  5. A vulnerability in gaizhenbiao/chuanhuchatgpt version 20240628 allows for a Denial of Service (DOS) attack. When uploading a file, if an attacker appends a large number of characters to the end of a m
    High · 7.5 CVE-2024-7807 all versions no fix
  6. An arbitrary file read vulnerability exists in gaizhenbiao/chuanhuchatgpt version 20240628 due to insufficient validation when loading prompt template files. An attacker can read any file that matches
    High · 7.5 CVE-2024-7962 all versions no fix
  7. A vulnerability in the JSON file handling of gaizhenbiao/chuanhuchatgpt version 20240410 allows any user to delete any JSON file on the server, including critical configuration files such as `config.j
    Critical · 9.1 CVE-2024-6255 all versions no fix
  8. A vulnerability in gaizhenbiao/chuanhuchatgpt version 20240410 allows an attacker to create arbitrary folders at any location on the server, including the root directory (C: dir). This can lead to unc
    Critical · 9.1 CVE-2024-6037 <= 20240410 no fix
  9. A vulnerability in gaizhenbiao/chuanhuchatgpt version 20240410 allows any user to restart the server at will by sending a specific request to the `/queue/join?` endpoint with `"fn_index":66`. This unr
    Critical · 9.1 CVE-2024-6036 <= 20240410 no fix
  10. A path traversal vulnerability exists in gaizhenbiao/chuanhuchatgpt version 20240410, allowing any user to delete other users' chat histories. This vulnerability can also be exploited to delete any fi
    High · 7.5 CVE-2024-6090 <= 20240410 no fix
  11. A Regular Expression Denial of Service (ReDoS) vulnerability exists in the latest version of gaizhenbiao/chuanhuchatgpt. The vulnerability is located in the filter_history function within the utils.py
    High · 7.5 CVE-2024-6038 <= 20240410 no fix
  12. A Server-Side Request Forgery (SSRF) vulnerability exists in the upload processing interface of gaizhenbiao/ChuanhuChatGPT versions <= ChuanhuChatGPT-20240410-git.zip. This vulnerability allows attack
    Critical · 9.8 CVE-2024-5822 <= 20240410 no fix
  13. A Local File Inclusion (LFI) vulnerability exists in the gaizhenbiao/chuanhuchatgpt application, specifically within the functionality for uploading chat history. The vulnerability arises due to impro
    High · 7.5 CVE-2024-4321 <= 20240310 no fix
  14. gaizhenbiao/chuanhuchatgpt is vulnerable to improper access control, allowing unauthorized access to the `config.json` file. This vulnerability is present in both authenticated and unauthenticated ver
    High · 7.5 CVE-2024-2217 <= 20240121 no fix

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