What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-16 · updated 2026-10-16
• Weakness: CWE-330

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.

Affected products

• daext Lightweight Cookie Notice – Cookie Banner for Cookie Consent: through 1.19

References

• https://plugins.trac.wordpress.org/changeset/3584811/lightweight-cookie-notice-free/trunk/public/class-daextlwcnf-public.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/54e53420-aa89-49d6-9632-cba066c46a51?source=cve

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