CVE-2024-4386: Gallery Block (Meow Gallery) <= 5.1.3 - Authenticated (Contributor+) Stored Cross-Site Scripting

Severity: medium (CVSS 6.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-14 · updated 2026-06-17
Weakness: CWE-79

Description

The Gallery Block (Meow Gallery) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘data_atts’ parameter in versions up to, and including, 5.1.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

tigroumeow Meow Gallery: through 5.1.3

References

https://plugins.trac.wordpress.org/browser/meow-gallery/trunk/classes/core.php#L273
https://plugins.trac.wordpress.org/changeset/3082976/
https://www.wordfence.com/threat-intel/vulnerabilities/id/477b41a5-b2ff-4b94-9622-824146a0e2ed?source=cve
https://plugins.trac.wordpress.org/browser/meow-gallery/trunk/classes/core.php#L273
https://plugins.trac.wordpress.org/changeset/3082976/
https://www.wordfence.com/threat-intel/vulnerabilities/id/477b41a5-b2ff-4b94-9622-824146a0e2ed?source=cve

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