How severe is CVE-2024-8016?

CVE-2024-8016 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-8016 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-8016?

CVE-2024-8016 affects Theeventscalendar Events Calendar Pro. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-8016?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-8016 have an EU (EUVD) identifier?

Yes. CVE-2024-8016 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-48888.

When was CVE-2024-8016 published?

CVE-2024-8016 was published on 2024-08-30 and last updated on 2026-06-17.

CVE-2024-8016

CVE-2024-8016 is a critical-severity vulnerability in Theeventscalendar Events Calendar Pro with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-48888
Weakness: CWE-502
Affected product: Theeventscalendar Events Calendar Pro
Published: 2024-08-30
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2024-8016?: CVE-2024-8016 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-8016 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-8016?: CVE-2024-8016 affects Theeventscalendar Events Calendar Pro. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-8016?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-8016 have an EU (EUVD) identifier?: Yes. CVE-2024-8016 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-48888.
When was CVE-2024-8016 published?: CVE-2024-8016 was published on 2024-08-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:theeventscalendar:events_calendar_pro:*:*:*:*:*:wordpress:*:*

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