CVE-2026-73381

CRITICAL 9.1

WordPress Popup by Supsystic plugin <= 1.13.0 - Broken Authentication vulnerability

CVSS Score

9.1

EPSS Score

0.0%

EPSS Percentile

0th

Unauthenticated Broken Authentication in Popup by Supsystic <= 1.13.0 versions.

CWE	CWE-288
Vendor	supsystic
Product	popup by supsystic
Published	Aug 18, 2026
Last Updated	Aug 18, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Affected Versions

supsystic / Popup by Supsystic

n/a ≤ 1.13.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/wordpress/plugin/popup-by-supsystic/vulnerability/wordpress-popup-by-supsystic-plugin-1-13-0-broken-authentication-vulnerability?_s_id=cve

Credits

Asim Alshaya | Patchstack Bug Bounty Program