CVE-2026-100108 Social Share Buttons <= 1.30 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'share_url' Network Setting
Authenticated subscribers can inject scripts via share_url setting, requiring a specific timer condition, affecting WordPress sites using this plugin.
- 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-2026-100108?
CVE-2026-100108 is a medium-severity cross-site scripting vulnerability in maxfoundry Social Share Buttons, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Social Share Buttons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'form (containing share_url)' parameter in all versions up to, and including, 1.30 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. Exploitation requires that the 7-day review-nag timer has elapsed since the attacker's first wp-admin visit, as the nonce needed to reach the save-network handler is only rendered in the DOM once that timer has passed.
Weakness: CWE-79
Which versions are affected by CVE-2026-100108?
How do I fix CVE-2026-100108?
No fix has been published for CVE-2026-100108 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-2026-100108 being exploited?
There is no known exploitation of CVE-2026-100108 in the wild and no public exploit code.
Sources
Also known as GHSA-hx89-3mx2-r93w.