# CVE-2025-34040: Seeyon Zhiyuan OA System Path Traversal File Upload

> Unauthenticated attackers can upload malicious JSP files via path traversal in the wpsAssistServlet interface, leading to remote code execution.

- **Severity:** Critical 10.0 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Jun 2025
- **Updated:** 14 May 2026
- **Also known as:** GHSA-mxx7-67f4-p53j

## What is CVE-2025-34040?

CVE-2025-34040 is a critical vulnerability in Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System, published on 24 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An arbitrary file upload vulnerability exists in the Zhiyuan OA platform via the wpsAssistServlet interface. The realFileType and fileId parameters are improperly validated during multipart file uploads, allowing unauthenticated attackers to upload crafted JSP files outside of intended directories using path traversal. Successful exploitation enables remote code execution as the uploaded file can be accessed and executed through the web server. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-01 UTC.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2025-34040?


## How do I fix CVE-2025-34040?

No fix has been published for CVE-2025-34040 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-34040 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34040 exists.

Public exploit code:

- 致远OA存在文件上传导致RCE（CVE-2025-34040） (github_poc): https://github.com/jisi-001/CVE-2025-34040Exp
- Zhiyuan OA - arbitrary file upload leading (exploitdb)
- Zhiyuan OA Platform - Arbitrary File Upload (nuclei): http/cves/2025/CVE-2025-34040.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-34040 and fix it if it is affected.

What it is: CVE-2025-34040 is a critical vulnerability in Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System, published on 24 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-2025-34040 exists.

Affected product: Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System. 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-2025-34040/ (Markdown: https://insights.sbomify.com/CVE-2025-34040/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-34040
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-34040
- OSV: https://osv.dev/vulnerability/CVE-2025-34040

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-34040/
Summaries are generated and may contain mistakes; the official description above is the record.