CVE-2026-28149
WordPress Headless Single Sign On plugin <= 1.6 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in Headless Single Sign On <= 1.6 versions.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
WordPress Headless Single Sign On plugin <= 1.6 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in Headless Single Sign On <= 1.6 versions.
- Record
CVE-2026-28149- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2026-57947
Unauthenticated PHP Object Injection in Headless Single Sign On <= 1.6 versions.
- Record
EUVD-2026-57947- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-p43p-3gc5-7925
Unauthenticated PHP Object Injection in Headless Single Sign On <= 1.6 versions.
Unauthenticated PHP Object Injection in Headless Single Sign On <= 1.6 versions.
- Record
GHSA-p43p-3gc5-7925- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
NVD
Unauthenticated PHP Object Injection in Headless Single Sign On <= 1.6 versions.
- Record
CVE-2026-28149- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-28149 is a critical vulnerability (CVSS 9.8) in Miniorange Headless Single Sign On, published August 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.56%, the 47th percentile. No source names a fixed version.