CVE-2024-10955 ReDoS (Regular Expression Denial of Service) in gaizhenbiao/chuanhuchatgpt

Medium 6.5 Published 20 Mar 2025 Updated 15 Oct 2025

An attacker can cause a Denial of Service by uploading a malicious JSON payload that triggers excessive CPU usage via inefficient regex parsing.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2024-10955?

CVE-2024-10955 is a medium-severity denial of service vulnerability in gaizhenbiao/chuanhuchatgpt, published on 20 Mar 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-1333

Which versions are affected by CVE-2024-10955?

1 open source package ship an affected version, including chuanhuchatgpt. It affects 1 product.

Package	Affected	Fixed in
`chuanhuchatgpt` PyPI	All versions to `2024-09-19`	None

Products include Gaizhenbiao Chuanhuchatgpt.

How do I fix CVE-2024-10955?

No fix has been published for CVE-2024-10955 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-10955 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-10955 exists.

Sources

Also known as GHSA-vhfq-gpqw-p5cw, PYSEC-2025-94.