What’s Vulnerable › Vulnerabilities

CVE-2026-28149: WordPress Headless Single Sign On plugin <= 1.6 - PHP Object Injection vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-10-23
• Weakness: CWE-502

Description

Unauthenticated PHP Object Injection in Headless Single Sign On <= 1.6 versions.

Affected products

• miniOrange Headless Single Sign On: through 1.6

References

• https://patchstack.com/database/wordpress/plugin/headless-single-sign-on/vulnerability/wordpress-headless-single-sign-on-plugin-1-6-php-object-injection-vulnerability?_s_id=cve

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