PT-2024-17296 · WordPress · Koalendar – Events & Appointments Booking Calendar

Peter Thaleikis · Published 2024-12-14 · Updated 2024-12-18 · CVE-2024-11855

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Koalendar – Events & Appointments Booking Calendar plugin for WordPress versions prior to 1.0.3

Description The issue is related to Stored Cross-Site Scripting via the height parameter due to insufficient input sanitization and output escaping. This allows 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.

Recommendations Update to the latest version to secure your site and mitigate risks. As a temporary workaround, consider restricting access to the height parameter in the affected plugin until a patch is available.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2024-11855

Affected Products

Koalendar – Events & Appointments Booking Calendar

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2024-11855 · Security Note
• https://twitter.com/transilienceai/status/1869249974300528731 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1867905345911238717 · Twitter Post
• https://twitter.com/CVEnew/status/1867908474266362001 · Twitter Post
• https://plugins.trac.wordpress.org/browser/koalendar-free-booking-widget/trunk/koa-wordpress.php#L29 · Note
• https://twitter.com/transilienceai/status/1869249981342715912 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/cbbbf5fe-0369-4de6-9b2f-957286b6f394?source=cve · Note
• https://plugins.trac.wordpress.org/changeset/3207869/koalendar-free-booking-widget/trunk/koa-wordpress.php · Note
• https://wordpress.org/plugins/koalendar-free-booking-widget/#developers · Note