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CVE-2026-12430— Blocksy Companion <= 2.1.45 - Authenticated (Editor+) Stored Cross-Site Scripting via 'product_description' Parameter

Quick assessment

Affected
creativethemeshq Blocksy Companion
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.

Creative Themes Blocksy Companion是Creative Themes公司的一个WordPress插件。 Creative Themes Blocksy Companion 2.1.45及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，可能导致经过身份验证的编辑器级别及以上权限的攻击者在页面中注入任意Web脚本。

CVSS 4.4 · Medium EPSS 0.34% · P25

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
creativethemeshq Blocksy Companion ≤ 2.1.45 affected
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I. Basic Information for CVE-2026-12430

Vulnerability Information
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Vulnerability Title
Blocksy Companion <= 2.1.45 - Authenticated (Editor+) Stored Cross-Site Scripting via 'product_description' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.1.45 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/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
Creative Themes Blocksy Companion 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Creative Themes Blocksy Companion是Creative Themes公司的一个WordPress插件。 Creative Themes Blocksy Companion 2.1.45及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，可能导致经过身份验证的编辑器级别及以上权限的攻击者在页面中注入任意Web脚本。
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
creativethemeshq Blocksy Companion 0 ~ 2.1.45 -

II. Public POCs for CVE-2026-12430

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III. Intelligence Information for CVE-2026-12430

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Patches & Fixes for CVE-2026-12430 (4)

News Coverage for CVE-2026-12430 (1)

Other References for CVE-2026-12430 (1)

IV. Related Vulnerabilities

Same product: Blocksy Companion
Same vendor: creativethemeshq
Same weakness: CWE-79

V. Comments for CVE-2026-12430

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