CVE-2026-12430— Blocksy Companion <= 2.1.45 - Authenticated (Editor+) Stored Cross-Site Scripting via 'product_description' Parameter
Possible ATT&CK Techniques 1AI
T1059 · Command and Scripting InterpreterAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| 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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (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
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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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
- CVE-2025-12846
Blocksy Companion <= 2.1.19 - Authenticated (Author+) Arbitr - CVE-2025-12475
Blocksy Companion <= 2.1.14 - Authenticated (Contributor+) S - CVE-2025-9565
Blocksy Companion <= 2.1.10 - Authenticated (Contributor+) S - CVE-2024-35633
WordPress Blocksy Companion plugin <= 2.0.42 - Server Side R - CVE-2024-4487
Blocksy Companion <= 2.0.45 - Authenticated (Contributor+) S
Same vendor: creativethemeshq
- CVE-2026-8365
Blocksy <= 2.1.41 - Authenticated (Contributor+) PHP Object - CVE-2026-2583
Blocksy <= 2.1.30 - Authenticated (Contributor+) Stored Cros - CVE-2025-12846
Blocksy Companion <= 2.1.19 - Authenticated (Author+) Arbitr - CVE-2025-12475
Blocksy Companion <= 2.1.14 - Authenticated (Contributor+) S - CVE-2025-9565
Blocksy Companion <= 2.1.10 - Authenticated (Contributor+) S
Same weakness: CWE-79
- CVE-2026-57656
WordPress Hester Core plugin <= 1.1.8 - Cross Site Scripting - CVE-2026-57651
WordPress Ghost Kit plugin <= 3.6.0 - Cross Site Scripting ( - CVE-2026-57650
WordPress Magazine Blocks plugin <= 1.8.3 - Cross Site Scrip - CVE-2026-57638
WordPress Fluent Booking plugin <= 2.1.0 - Cross Site Script - CVE-2026-57629
WordPress StatCounter plugin <= 2.1.1 - Cross Site Scripting
V. Comments for CVE-2026-12430
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