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CVE-2026-16775— Smash Balloon Social Post Feed <= 4.9.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'id' Shortcode Attribute

Quick assessment

Affected
smub Smash Balloon Social Post Feed – Simple Social Feeds for WordPress
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.

WordPress Smash Balloon Social Post Feed是WordPress基金会开源的一款整合社交媒体帖子流的CMS插件。 WordPress Smash Balloon Social Post Feed 4.9.0及之前版本存在跨站脚本漏洞，该漏洞源于对'id' Shortcode属性输入清理和输出转义不足，可能导致具有贡献者级别及以上权限的已认证攻击者在页面中注入任意Web脚本，当用户访问被注入的页面时执行。

CVSS 6.4 · Medium EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
smub Smash Balloon Social Post Feed – Simple Social Feeds for WordPress ≤ 4.9.0 affected
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I. Basic Information for CVE-2026-16775

Vulnerability Information
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Vulnerability Title
Smash Balloon Social Post Feed <= 4.9.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'id' Shortcode Attribute
Source: CVE Program / CVE List V5
Vulnerability Description
The Smash Balloon Social Post Feed – Simple Social Feeds for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'id' Shortcode Attribute in all versions up to, and including, 4.9.0 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.
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
Vulnerability Title
WordPress Smash Balloon Social Post Feed 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Smash Balloon Social Post Feed是WordPress基金会开源的一款整合社交媒体帖子流的CMS插件。 WordPress Smash Balloon Social Post Feed 4.9.0及之前版本存在跨站脚本漏洞，该漏洞源于对'id' Shortcode属性输入清理和输出转义不足，可能导致具有贡献者级别及以上权限的已认证攻击者在页面中注入任意Web脚本，当用户访问被注入的页面时执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
smub Smash Balloon Social Post Feed – Simple Social Feeds for WordPress 0 ~ 4.9.0 -

II. Public POCs for CVE-2026-16775

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III. Intelligence Information for CVE-2026-16775

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Patches & Fixes for CVE-2026-16775 (2)

Vendor Advisories for CVE-2026-16775 (1)

IV. Related Vulnerabilities

Same product: Smash Balloon Social Post Feed – Simple Social Feeds for WordPress
Same vendor: smub
Same weakness: CWE-79

V. Comments for CVE-2026-16775

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