# CVE-2025-34045: WeiPHP Path Traversal Arbitrary File Read

> Unauthenticated attackers can read arbitrary files on WeiPHP servers via path traversal in the image download endpoint, exposing sensitive data.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Jun 2025
- **Updated:** 29 Nov 2025
- **Also known as:** GHSA-r2vv-r3xx-x6mh

## What is CVE-2025-34045?

CVE-2025-34045 is a high-severity path traversal vulnerability in Shenzhen Yuanmengyun Technology Co., Ltd. WeiPHP, published on 26 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A path traversal vulnerability exists in WeiPHP 5.0, an open source WeChat public account platform development framework by Shenzhen Yuanmengyun Technology Co., Ltd. The flaw occurs in the picUrl parameter of the /public/index.php/material/Material/_download_imgage endpoint, where insufficient input validation allows unauthenticated remote attackers to perform directory traversal via crafted POST requests. This enables arbitrary file read on the server, potentially exposing sensitive information such as configuration files and source code. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-05 UTC.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2025-34045?

It affects 1 product.


Products: Weiphp Weiphp.

## How do I fix CVE-2025-34045?

No fix has been published for CVE-2025-34045 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-34045 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34045 exists.

Public exploit code:

- WeiPHP 5.0 - Path Traversal (nuclei): http/cves/2025/CVE-2025-34045.yaml

## Other vulnerabilities in Shenzhen Yuanmengyun Technology Co., Ltd. WeiPHP

- [CVE-2020-20300](https://insights.sbomify.com/CVE-2020-20300/): SQL injection in n/a (critical 9.8)
- [CVE-2025-55849](https://insights.sbomify.com/CVE-2025-55849/): SQL injection in n/a (high 8.4)
- [CVE-2020-20299](https://insights.sbomify.com/CVE-2020-20299/): Missing authorization in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-34045 and fix it if it is affected.

What it is: CVE-2025-34045 is a high-severity path traversal vulnerability in Shenzhen Yuanmengyun Technology Co., Ltd. WeiPHP, published on 26 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34045 exists.

Affected product: Shenzhen Yuanmengyun Technology Co., Ltd. WeiPHP. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2025-34045/ (Markdown: https://insights.sbomify.com/CVE-2025-34045/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-34045
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-34045
- OSV: https://osv.dev/vulnerability/CVE-2025-34045

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-34045/
Summaries are generated and may contain mistakes; the official description above is the record.