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

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

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Mar 2025
- **Updated:** 15 Oct 2025
- **Also known as:** GHSA-vhfq-gpqw-p5cw, PYSEC-2025-94

## 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 (Inefficient Regular Expression Complexity)

## Which versions are affected by CVE-2024-10955?

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


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

Products: 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.

## Is CVE-2024-10955 being exploited?

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

## Other vulnerabilities in gaizhenbiao/chuanhuchatgpt

- [CVE-2024-3234](https://insights.sbomify.com/CVE-2024-3234/): Path Traversal in gaizhenbiao/chuanhuchatgpt (critical 9.8)
- [CVE-2024-5982](https://insights.sbomify.com/CVE-2024-5982/): Path Traversal in gaizhenbiao/chuanhuchatgpt (critical 9.1)
- [CVE-2024-6255](https://insights.sbomify.com/CVE-2024-6255/): Path Traversal in gaizhenbiao/chuanhuchatgpt (high 8.2)
- [CVE-2024-8613](https://insights.sbomify.com/CVE-2024-8613/): Improper Access Control in gaizhenbiao/chuanhuchatgpt (high 8.1)
- [CVE-2024-9216](https://insights.sbomify.com/CVE-2024-9216/): Authentication Bypass in gaizhenbiao/ChuanhuChatGPT (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-10955 and fix it if it is affected.

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

Affected packages and fixed versions:
- chuanhuchatgpt (PyPI): affected all versions up to 2024-09-19; no fix listed

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-10955/ (Markdown: https://insights.sbomify.com/CVE-2024-10955/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-10955
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-10955
- OSV: https://osv.dev/vulnerability/CVE-2024-10955

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-10955/
Summaries are generated and may contain mistakes; the official description above is the record.