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CVE-2026-96562— Broken Link Checker <= 2.4.14.1 - Unauthenticated Arbitrary Shortcode Execution via parser_callback

Quick assessment

Affected
wpmudev Broken Link Checker
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"Broken Link Checker"插件在所有 2.4.14.1 及更早版本中，存在任意短代码执行漏洞。该漏洞的成因在于：软件允许用户执行某项操作，该操作在调用 函数之前未对传入值进行适当验证。这使得未认证的攻击者能够执行任意短代码。利用该漏洞需要攻击者提交包含短代码载荷的评论，且该载荷需位于 或 属性中；该评论必须通过网站常规的评论审核流程获得批准。一旦评论被批准，短代码便会通过 WP-Cron 自动执行，无需攻击者进行任何进一步操作。

CVSS 6.5 · Medium EPSS 0.28% · P19

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpmudev Broken Link Checker ≤ 2.4.14.1 affected
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I. Basic Information for CVE-2026-96562

Vulnerability Information
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Vulnerability Title
Broken Link Checker <= 2.4.14.1 - Unauthenticated Arbitrary Shortcode Execution via parser_callback
Source: CVE Program / CVE List V5
Vulnerability Description
The The Broken Link Checker plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 2.4.14.1. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes. Exploitation requires that a submitted comment containing the shortcode payload in an href or src attribute is approved through the site's normal comment moderation workflow; once approved, the shortcode is executed automatically via WP-Cron without any further attacker interaction.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
wpmudev Broken Link Checker 0 ~ 2.4.14.1 -

II. Public POCs for CVE-2026-96562

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III. Intelligence Information for CVE-2026-96562

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Vendor Pages for CVE-2026-96562 (2)

Other References for CVE-2026-96562 (2)

Same Patch Batch · wpmudev · 2026-10-16 · 3 CVEs total

CVE-2026-103911 6.5 MEDIUM Forminator Forms <= 1.58.1 - Unauthenticated Arbitrary Shortcode Execution via 's' Search
CVE-2026-101335 6.5 MEDIUM Forminator Forms <= 1.58.1 - Unauthenticated Arbitrary Shortcode Execution via 'User-Agent

IV. Related Vulnerabilities

Same product: Broken Link Checker
Same vendor: wpmudev
Same weakness: CWE-94

V. Comments for CVE-2026-96562

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