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CVE-2026-100108— Social Share Buttons <= 1.30 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'share_url' Network Setting

Quick assessment

Affected
maxfoundry Social Share Buttons
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 的"Social Share Buttons"插件在所有 1.30 及更早版本中，因输入清洗和输出转义不足，存在通过包含 参数的表单导致的存储型跨站脚本（Stored XSS）漏洞。该漏洞允许拥有订阅者（Subscriber）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，这些脚本将被执行。利用该漏洞的前提是：自攻击者首次访问 wp-admin 起，7 天的“评论提醒”（review-nag）计时器必须已过期，因为用于访问 处理程序的 nonce 仅在该计时器

CVSS 6.4 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
maxfoundry Social Share Buttons ≤ 1.30 affected
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I. Basic Information for CVE-2026-100108

Vulnerability Information
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Vulnerability Title
Social Share Buttons <= 1.30 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'share_url' Network Setting
Source: CVE Program / CVE List V5
Vulnerability Description
The Social Share Buttons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'form (containing share_url)' parameter in all versions up to, and including, 1.30 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that the 7-day review-nag timer has elapsed since the attacker's first wp-admin visit, as the nonce needed to reach the save-network handler is only rendered in the DOM once that timer has passed.
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
maxfoundry Social Share Buttons 0 ~ 1.30 -

II. Public POCs for CVE-2026-100108

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III. Intelligence Information for CVE-2026-100108

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Patches & Fixes for CVE-2026-100108 (1)

Proof of Concept for CVE-2026-100108 (2)

Vendor Pages for CVE-2026-100108 (3)

Other References for CVE-2026-100108 (1)

IV. Related Vulnerabilities

Same product: Social Share Buttons
Same vendor: maxfoundry
Same weakness: CWE-79

V. Comments for CVE-2026-100108

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