CVE-2026-28148CWE-347

CVE-2026-28148

Critical · published August 13, 2026

CVSS v3.1

9.8

EPSS

0%

Percentile

26.7

In the wild

Unconfirmed

What it is

Unauthenticated Bypass Vulnerability in Headless Single Sign On <= 1.6 versions.

The record

Technical detail

CVSS v3.1: 9.8 · CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0: Not supplied
EPSS: 0.00345 · 26.7th percentile
Weakness: CWE-347 · Improper Verification of Cryptographic Signature
Published: 2026-08-13T18:16Z

References (1)

https://patchstack.com/database/wordpress/plugin/headless-single-sign-on/vulnerability/wordpress-headless-single-sign-on-plugin-1-6-bypass-vulnerability-vulnerability?_s_id=cve · [email protected]

EPSS history

Timeline

13 AUG 13:36Z
WordPress Headless Single Sign On plugin <= 1.6 - Bypass Vulnerability vulnerability
cvelistv5