PT-2026-81058 · WordPress · The Events Calendar

CVE-2026-78265

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Published

2026-08-24

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Updated

2026-08-25

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions The Events Calendar versions prior to 6.17.3
Description An unauthenticated PHP Object Injection issue exists. PHP Object Injection occurs when untrusted input is passed to the PHP unserialize() function, potentially allowing an attacker to manipulate object properties or execute arbitrary code.
Recommendations Update to a version newer than 6.17.2.

Fix

Deserialization of Untrusted Data

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Weakness Enumeration

Related Identifiers

CVE-2026-78265

Affected Products

The Events Calendar