Vulnerability in SpeedyCache – Cache, Optimization, Performance — CVE-2026-104006

What to do now

Update SpeedyCache – Cache, Optimization, Performance to 1.4.3 or later.

Affected versions

• Everything up to and including 1.4.2

The SpeedyCache – Cache, Optimization, Performance plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.4.2 via the 'comment_author_*, comment_author_email_*' parameter. This makes it possible for unauthenticated attackers to extract the full name and email address of returning commenters pre-filled into comment form input fields and persisted as the site-wide cached page by any unauthenticated attacker requesting the same public URL. The read-side handler in advanced-cache.php correctly skips cached delivery for requests carrying comment_author_* cookies, but this check is absent on the write path, meaning the cache poisoning is invisible to the victim commenter yet fully exploitable by any unauthenticated attacker with no cookies.

This description is reproduced verbatim from the public vulnerability record.

• https://www.wordfence.com/threat-intel/vulnerabilities/id/c6b8d5ca-34e2-4d25-9185-7fcee790379d?source=api-prod

Part of this record comes from Wordfence Intelligence. Original: https://www.wordfence.com/threat-intel/vulnerabilities/id/c6b8d5ca-34e2-4d25-9185-7fcee790379d
Copyright 2012-2026 Defiant Inc. / Full license text

This page is compiled automatically from public databases. Accuracy is not guaranteed; confirm against the vendor advisory before acting.