Deserialization in Theeventscalendar Events Calendar Pro
CVE-2024-8016
The Events Calendar Pro plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 7.0.2 via deserialization of untrusted input from the 'filters' parameter in widgets. This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to execute code remotely. In certain configurations, this can be exploitable by lower level users. We confirmed that this plugin installed with Elementor makes it possible for users with contributor-level access and above to exploit this issue.
Vulnerability class: Insecure Deserialization
EPSS: 0.007 (51.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@wordfence.com (Third Party Advisory)
- security@wordfence.com (Release Notes)
- security@wordfence.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2024-8016?
- CVE-2024-8016 is a critical-severity vulnerability in Theeventscalendar Events Calendar Pro, classified under Deserialization of Untrusted Data. CVSS score: 9.1/10. Published 2024-08-30.
- How severe is CVE-2024-8016?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2024-8016 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.