{"id":"PYSEC-2025-94","details":"A Regular Expression Denial of Service (ReDoS) vulnerability exists in gaizhenbiao/chuanhuchatgpt, as of commit 20b2e02. The server uses the regex pattern `r'\u003c[^\u003e]+\u003e'` 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.","aliases":["CVE-2024-10955"],"modified":"2026-05-21T15:00:06.969839296Z","published":"2025-03-20T10:15:22.350Z","references":[{"type":"EVIDENCE","url":"https://huntr.com/bounties/8291f8d0-5060-47e7-9986-1f411310fb7b"}],"affected":[{"package":{"name":"chuanhuchatgpt","ecosystem":"PyPI","purl":"pkg:pypi/chuanhuchatgpt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2024-09-19"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/chuanhuchatgpt/PYSEC-2025-94.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}