CVE-2026-104006 Information disclosure in SpeedyCache – Cache, Optimization, Performance
Unauthenticated attackers can extract returning commenters' names and emails from cached pages due to missing cookie checks on the cache write path.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104006?
CVE-2026-104006 is a low-severity vulnerability in softaculous SpeedyCache – Cache, Optimization, Performance, published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-524
Which versions are affected by CVE-2026-104006?
How do I fix CVE-2026-104006?
No fix has been published for CVE-2026-104006 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-104006 being exploited?
There is no known exploitation of CVE-2026-104006 in the wild and no public exploit code.
Sources
Also known as GHSA-fvr3-4rq4-9pc2.