CVE-2026-3878 WP Docs <= 2.2.9 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'wpdocs_options[icon_size]'
Authenticated attackers can inject arbitrary scripts via the icon_size parameter, leading to stored XSS execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3878?
CVE-2026-3878 is a medium-severity cross-site scripting vulnerability in fahadmahmood WP Docs, published on 16 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The WP Docs plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wpdocs_options[icon_size]' parameter in all versions up to, and including, 2.2.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2026-3878?
How do I fix CVE-2026-3878?
No fix has been published for CVE-2026-3878 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-2026-3878 being exploited?
There is no known exploitation of CVE-2026-3878 in the wild and no public exploit code.
Sources
Also known as GHSA-jp62-r24w-285j.