What’s Vulnerable › Vulnerabilities

CVE-2026-1820: Media Library Alt Text Editor <= 1.0.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'post_id' Shortcode Attribute

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-07 · updated 2026-06-17
• Weakness: CWE-79

Description

The Media Library Alt Text Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'bvmalt_sc_div_update_alt_text' shortcode in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping on user supplied attributes. 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

• brainvireinfo Media Library Alt Text Editor: through 1.0.0

References

• https://plugins.trac.wordpress.org/browser/media-library-alt-text-editor/tags/1.0.0/common/functions.php#L34
• https://www.wordfence.com/threat-intel/vulnerabilities/id/7879aaad-37b2-410d-9b21-029bed47202c?source=cve

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