CVE-2026-8896: Mirsoftware Mir Blocks And Shortcodes

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The MIR blocks and shortcodes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title' attribute (and other attributes such as 'ready_animation_text') of the 'msc_stats' shortcode in versions up to, and including, 1.0.0. This is due to insufficient input sanitization and output escaping on user supplied shortcode attributes inside the msc_stats() rendering function. 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.

Affected products

• Mirsoftware Mir Blocks And Shortcodes: up to and including 1.0.0

Published 2026-06-24. Last modified 2026-06-30.