Sensitive Information Exposure in Lightweight Cookie Notice Plugin for WordPress
CVE-2026-12272

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Lightweight Cookie Notice – Cookie Banner For Cookie Consent
Vendor
CVE Published:
16 October 2026

What is CVE-2026-12272?

The Lightweight Cookie Notice – Cookie Banner for Cookie Consent plugin for WordPress is prone to Sensitive Information Exposure due to the hardcoded W3TC_DYNAMIC_SECURITY constant. This vulnerability affects all versions up to and including 1.19, allowing unauthenticated attackers to discern the W3 Total Cache mfunc security key. If the W3 Total Cache plugin is installed, this could facilitate arbitrary PHP code injection, posing a significant risk to site security.

Affected Version(s)

Lightweight Cookie Notice – Cookie Banner for Cookie Consent 0 <= 1.19

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3584811/ligh...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

wesley (wcraft)
.