CVE-2024-12521: Slotti Ajanvaraus <= 1.3.1 - Authenticated (Contributor+) Stored Cross-Site Scripting

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: 2025-01-08 · updated 2026-06-17
Weakness: CWE-79

Description

The Slotti Ajanvaraus plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'slotti-embed-ga' shortcode in all versions up to, and including, 1.3.1 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

teonos Slotti Ajanvaraus: through 1.3.1

References

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3218204%40slotti-ajanvaraus&new=3218204%40slotti-ajanvaraus&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/1d95ec4b-0cbc-49c6-821e-7050d8045159?source=cve

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