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CVE-2026-5465 is a privilege escalation and account takeover vulnerability in the Booking for Appointments and Events Calendar – Amelia plugin for WordPress. It affects all versions through 2.1.3. The flaw is in the provider profile update path, specifically the UpdateProviderCommandHandler, which fails to enforce authorization on changes to the externalId field when a Provider (Employee) user updates their own profile. The externalId value maps directly to a WordPress user ID and attacker-supplied profile data is allowed to reach privileged WordPress account-management functions. As described in the provided content, the attacker-controlled externalId is passed to wp_set_password() and wp_update_user() without verifying that the Provider is authorized to act on the referenced WordPress account. By modifying externalId to the user ID of another account, including an Administrator account, and submitting profile changes such as a new password, an authenticated Provider-level attacker can reset the target account credentials and alter profile data, resulting in full account takeover.
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What an attacker gets, and what they’ve been doing with it.
wp_set_password() and can also modify profile attributes such as email address through wp_update_user(). This yields full compromise of the targeted account and, when an Administrator account is targeted, effectively full administrative control of the WordPress site. The provided content indicates high confidentiality, integrity, and availability impact.If you can’t patch tonight, do this now.
Patch, then assume compromise.
externalId mapping before the privileged WordPress functions are invoked. Administrators should deploy the patched version through the standard WordPress plugin update mechanism and verify that no instances remain on versions 2.1.3 or earlier.No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An insecure direct object reference vulnerability in the Booking for Appointments and Events Calendar – Amelia WordPress plugin that allows authenticated Provider-level users to take over arbitrary WordPress accounts, including Administrator, by manipulating the externalId field during profile updates.
A high-severity authorization bypass / privilege escalation vulnerability in the Amelia WordPress booking plugin that allows a low-privileged Provider/Employee user to modify the externalId field, reset another WordPress user's password, and take over an Administrator account.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.