CVE-2026-107742 10Web Booster <= 2.34.8 - Unauthenticated Stored Cross-Site Scripting via Comment Author Name

Q: What is CVE-2026-107742?

CVE-2026-107742 is a high-severity cross-site scripting vulnerability in 10Web Booster – Website speed optimization, Cache & Page Speed optimizer, published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Q: Is CVE-2026-107742 being exploited?

There is no known exploitation of CVE-2026-107742 in the wild and no public exploit code.

Q: How do I fix CVE-2026-107742?

No fix has been published for CVE-2026-107742 yet. Limit exposure of the affected software until one is available.

High 7.2 Published 10 Oct 2026 Updated 11 Oct 2026

Unauthenticated attackers can inject arbitrary scripts via comment author names, leading to stored XSS execution when users view affected pages.

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-2026-107742?

CVE-2026-107742 is a high-severity cross-site scripting vulnerability in 10Web Booster – Website speed optimization, Cache & Page Speed optimizer, 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 10Web Booster – Website speed optimization, Cache & Page Speed optimizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'author' parameter in all versions up to, and including, 2.34.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is exploitable because a comment author Name value containing ' src=' and an event-handler payload contains no HTML tags or quote characters, allowing it to survive WordPress core's sanitize_text_field and land verbatim inside the alt attribute, where the plugin's own str_replace subsequently injects the single quote that breaks out of the attribute context.

Weakness: CWE-79

Which versions are affected by CVE-2026-107742?

How do I fix CVE-2026-107742?

No fix has been published for CVE-2026-107742 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-107742 being exploited?