MEDIUM6.5
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'<[^>]+>'` 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.
Are you affected?
Enter the version of the package you're using.
Affected packages
PyPI/chuanhuchatgpt
Introduced in:
0No fixed version published yet for chuanhuchatgpt (pip). Pin to a known-safe version or switch to an alternative.