What’s Vulnerable › Vulnerabilities

CVE-2026-8896: MIR blocks and shortcodes <= 1.0.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-24 · updated 2026-06-30
• Weakness: CWE-79

Description

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: through 1.0.0

References

• https://plugins.trac.wordpress.org/browser/mir-blocks-and-shortcodes/trunk/frontend-templates/function/msc-stats.php#L22
• https://plugins.trac.wordpress.org/browser/mir-blocks-and-shortcodes/trunk/frontend-templates/function/msc-stats.php#L44
• https://www.wordfence.com/threat-intel/vulnerabilities/id/d7d698be-fae6-4960-912a-1078ea407031?source=cve

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