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CVE-2026-12272— Lightweight Cookie Notice <= 1.19 - Sensitive Information Exposure via W3TC_DYNAMIC_SECURITY Constant

Quick assessment

Affected
daext Lightweight Cookie Notice – Cookie Banner for Cookie Consent
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 插件"Lightweight Cookie Notice – Cookie Banner for Cookie Consent"在所有 1.19 及以下版本中存在敏感信息泄露漏洞。该漏洞源于 W3TC_DYNAMIC_SECURITY 常量被硬编码为一个公开已知的值。这导致未认证的攻击者能够获知 W3 Total Cache 的 mfunc 安全密钥；若系统中已安装 W3 Total Cache，攻击者可能借此实现任意 PHP 代码注入。

CVSS 5.3 · Medium EPSS 0.21% · P11

Affected Version Matrix 1

VendorProduct Version RangeStatus
daext Lightweight Cookie Notice – Cookie Banner for Cookie Consent ≤ 1.19 affected
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I. Basic Information for CVE-2026-12272

Vulnerability Information
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Vulnerability Title
Lightweight Cookie Notice <= 1.19 - Sensitive Information Exposure via W3TC_DYNAMIC_SECURITY Constant
Source: CVE Program / CVE List V5
Vulnerability Description
The Lightweight Cookie Notice – Cookie Banner for Cookie Consent plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.19 This is due to the W3TC_DYNAMIC_SECURITY constant being hardcoded to a publicly known value. This makes it possible for unauthenticated attackers to know the W3 Total Cache mfunc security key, which when W3 Total Cache is installed may allow arbitrary PHP code injection.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用不充分的随机数
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
daext Lightweight Cookie Notice – Cookie Banner for Cookie Consent 0 ~ 1.19 -

II. Public POCs for CVE-2026-12272

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III. Intelligence Information for CVE-2026-12272

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Patches & Fixes for CVE-2026-12272 (1)

Vendor Pages for CVE-2026-12272 (1)

IV. Related Vulnerabilities

Same vendor: daext
Same weakness: CWE-330

V. Comments for CVE-2026-12272

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