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CVE-2026-16776— MP3 Audio Player <= 5.14.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

Quick assessment

Affected
sonaar MP3 Audio Player – Music Player, Podcast Player & Radio by Sonaar
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sonaar 开发的 WordPress 插件“MP3 Audio Player – Music Player, Podcast Player & Radio”（版本 5.14.2 及更早版本）存在存储型跨站脚本（Stored XSS）漏洞，该漏洞源于对短代码（Shortcode）属性中用户输入的处理不当，具体表现为输入清理（sanitization）和输出转义（output escaping）不足。 此漏洞允许具备贡献者（Contributor）及以上权限的已认证攻击者在页面中注入任意 Web 脚本。当其他用户访

CVSS 6.4 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
sonaar MP3 Audio Player – Music Player, Podcast Player & Radio by Sonaar ≤ 5.14.2 affected
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I. Basic Information for CVE-2026-16776

Vulnerability Information
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Vulnerability Title
MP3 Audio Player <= 5.14.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
Source: CVE Program / CVE List V5
Vulnerability Description
The MP3 Audio Player – Music Player, Podcast Player & Radio by Sonaar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Shortcode Attributes in all versions up to, and including, 5.14.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. WordPress's save-time wp_kses_post does not neutralize the payload because the attack is delivered via shortcode attributes rather than raw HTML in post content, allowing the unescaped values to survive to render time.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sonaar MP3 Audio Player – Music Player, Podcast Player & Radio by Sonaar 0 ~ 5.14.2 -

II. Public POCs for CVE-2026-16776

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III. Intelligence Information for CVE-2026-16776

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Patches & Fixes for CVE-2026-16776 (2)

News Coverage for CVE-2026-16776 (1)

Other References for CVE-2026-16776 (1)

IV. Related Vulnerabilities

Same product: MP3 Audio Player – Music Player, Podcast Player & Radio by Sonaar
Same vendor: sonaar
Same weakness: CWE-79

V. Comments for CVE-2026-16776

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