CVE-2026-89270 - The Popup Builder โ Create highly converting, mobile friendly marketing popups. plugin for WordPress is vulnerable to au
The Popup Builder โ 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.
CRITICAL
Severity & confidence
Source severitycritical
Platform severitycritical
Confidencehigh
Exploitationunknown
CVSS9.1
Affected
Vendorswordpress
Reporting sources (1)
NIST NVD - National Vulnerability Database
Timeline & provenance
Published2026-10-31T07:16:37
Last updated2026-11-03T07:10:35
Ingested2026-11-02T12:32:34
FreshnessNEAR-REAL-TIME
Threat typevulnerability
Recommended action
No recommended action published with this item - review the original source.
Next steps
- Identify affected systems in your environment.
- Apply the vendor patch or mitigation guidance.
- Review logs for indicators described in the advisory.
- Follow the affected vendor/product to track updates.
Confidence explanation
Reported by a government or cert-grade source (CISA, NCSC, NVD, ENISA, MSRC).
Source type: standards ยท Original: NIST NVD - National Vulnerability Database