Answer in brief
CVE-2026-89270 records a Critical severity (CVSS 9.1) vulnerability in Popup Builder <= 4.4.5 - Missing Authorization to Unauthenticated Arbitrary Popup Post Trashing via 'post_type' and 'sg_popup_preview_id' Parameters. The current sources do not mark it as known exploited. The current feed maps popupbuilder/Popup Builder – Create highly converting, mobile friendly marketing popups. (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps popupbuilder/Popup Builder – Create highly converting, mobile friendly marketing popups. (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| popupbuilder/Popup Builder – Create highly converting, mobile friendly marketing popups.generic | >=0 <=4.4.5 | Not reported |
Published upstream
Oct 31, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 31, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 31, 2026
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.
Quoted source text, attributed separately from HOL analysis.