id: PYSEC-2025-94
published: "2025-03-20T10:15:22.350Z"
modified: "2025-10-15T13:15:38.243Z"
aliases:
- CVE-2024-10955
details: 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:
- package:
    name: chuanhuchatgpt
    ecosystem: PyPI
    purl: pkg:pypi/chuanhuchatgpt
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - last_affected: "2024-09-19"
  ecosystem_specific: {}
references:
- type: EVIDENCE
  url: https://huntr.com/bounties/8291f8d0-5060-47e7-9986-1f411310fb7b
severity:
- type: CVSS_V3
  score: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H