Vulnerability · Published Oct 31, 2026 · Assigned by Wordfence

CVE-2026-89270Popup Builder <= 4.4.5 - Missing Authorization to Unauthenticated Arbitrary Popup Post Trashing via 'post_type' and 'sg_popup_preview_id' Parameters

Critical 9.1

In plain English

A critical-severity missing authorization in Popup Builder – Create highly converting, mobile friendly marketing popups. from popupbuilder. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.4%top 66.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Popup Builder – Create highly converting, mobile friendly marketing popups. plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.4.5 This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to trash all published popups on the site with a single unauthenticated GET request. The attack is amplified by a second flaw in SGPopup::find(), which returns false for every normally published popup when the sg_popup_preview_id parameter is present, causing the trash branch to fire against every popup on the site simultaneously.

Affected products (as reported)

Vendor	Product	Versions
popupbuilder	Popup Builder – Create highly converting, mobile friendly marketing popups.	0 – through 4.4.5

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

In plain English

Official description

Affected products (as reported)

References