PT-2023-29154 · WordPress · Wp Event Manager

Jack Yu + 1 · Published 2023-09-27 · Updated 2023-09-29 · CVE-2023-4423

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions The WP Event Manager – Events Calendar, Registrations, Sell Tickets with WooCommerce plugin for WordPress versions up to, and including, 3.1.37.1

Description The issue is related to Stored Cross-Site Scripting via admin settings due to insufficient input sanitization and output escaping. This allows authenticated attackers with administrator-level permissions and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The issue only affects multi-site installations and installations where unfiltered html has been disabled.

Recommendations For versions up to, and including, 3.1.37.1, update to a version that includes the necessary input sanitization and output escaping fixes to prevent Stored Cross-Site Scripting attacks. As a temporary workaround, consider restricting administrator-level permissions and ensuring that unfiltered html is enabled to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2023-4423

Affected Products

Wp Event Manager

References · 7

• 🔥 https://github.com/wpeventmanager/wp-event-manager/issues/1483 · Exploit
• 🔥 https://github.com/Jacky-Y/vuls/blob/main/vul5.md · Exploit
• https://osv.dev/vulnerability/CVE-2023-4423 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-4423 · Security Note
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2969034%40wp-event-manager%2Ftrunk&old=2953169%40wp-event-manager%2Ftrunk&sfp_email=&sfph_mail= · Patch
• https://wordfence.com/threat-intel/vulnerabilities/id/dd9d22b0-a84a-4bf2-b8b4-89bae2970f29?source=cve · Note
• https://twitter.com/VulmonFeeds/status/1707079610490310890 · Twitter Post