Vulnerability Intelligence Report
WordPress Headless Single Sign On plugin <= 1.6 - PHP Object Injection vulnerability
CVE-2026-28149
Unauthenticated PHP Object Injection in Headless Single Sign On <= 1.6 versions.
Deserialization
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-502 ↗CWE-502 Deserialization of Untrusted Data
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| miniOrange | Headless Single Sign On | n/a <= 1.6 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Vulnerability Class
Deserialization
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Patchstack · Bug Bounty Provider · Estonia |
| Reserved | 2026-02-25T12:14:24 |
| Published | 2026-08-13T13:36:27 |
| Last Updated | 2026-08-13T15:23:45 |
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