Is CVE-2026-56053 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-56053 being exploited in the wild.

How severe is CVE-2026-56053?

High severity, with a CVSS score of 8.8, published 25 June 2026.

Is there a fix for CVE-2026-56053?

A patch was published on 2026-06-25: Fixed in version 4.3.4.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-56053 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-56053?

Check whether you run EventPrime at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-56053: EventPrime PHP object injection in Subscriber role

CVE-2026-56053 · Severity: high · CVSS 8.8 · Published 2026-06-25

EventPrime is a WordPress plugin used for managing event calendars and bookings. A security vulnerability in this plugin allows logged-in users with basic 'Subscriber' permissions to inject malicious data that the server processes incorrectly. This could lead to a complete takeover of the website, unauthorized access to sensitive data, or a total service outage.

Technologies: EventPrime. Vendors: EventPrime.

Quick answers

Is CVE-2026-56053 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-56053 being exploited in the wild.
How severe is CVE-2026-56053?: High severity, with a CVSS score of 8.8, published 25 June 2026.
Which products and versions are affected?: EventPrime <= 4.3.4.1.
Is there a fix for CVE-2026-56053?: A patch was published on 2026-06-25: Fixed in version 4.3.4.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-56053 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-56053?: Check whether you run EventPrime at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The EventPrime plugin for WordPress (versions <= 4.3.4.1) is vulnerable to PHP Object Injection due to improper deserialization of user-supplied input. An attacker with Subscriber-level privileges can exploit this by submitting specially crafted input to a vulnerable endpoint. If a suitable Property-Oriented Programming (POP) chain is present on the server, this can lead to remote code execution, SQL injection, or arbitrary file deletion. The issue is fixed in version 4.3.4.2.

Affected products

EventPrime EventPrime <= 4.3.4.1

Timeline

2026-05-31: other: Reported by VanTastic
2026-06-25: disclosed
2026-06-25: patched: Fixed in version 4.3.4.2

References

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