CVE-2026-11402 Services Section Block <= 1.4.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'link' Block Attribute
Authenticated contributors can inject persistent scripts via the link attribute, executing code when users view the page.
- 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-2026-11402?
CVE-2026-11402 is a medium-severity cross-site scripting vulnerability in bplugins Services Section Block – Showcase Service Details in Grid or Columns, published on 18 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Services Section Block – Showcase Service Details in Grid or Columns plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'link' Block Attribute in all versions up to, and including, 1.4.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload persists inside HTML comments in post_content, bypassing wp_kses_post sanitization at save time, and executes via both the primary service link anchor and a secondary title-wrapped anchor when the linkIn option is set to 'title'.
Weakness: CWE-79
Which versions are affected by CVE-2026-11402?
How do I fix CVE-2026-11402?
No fix has been published for CVE-2026-11402 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-2026-11402 being exploited?
There is no known exploitation of CVE-2026-11402 in the wild and no public exploit code.
Sources
Also known as GHSA-vf4m-437w-3xxm.