CVE-2026-73364: WordPress Flexible Subscriptions plugin <= 1.8.1 - PHP Object Injection vulnerability

Published Aug 19, 2026
·
Updated

Customer PHP Object Injection in Flexible Subscriptions <= 1.8.1 versions.

Affected Software

1 affected component
WordPress Flexible Subscriptions<=1.8.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade WordPress Flexible Subscriptions plugin to a version that resolves this vulnerability.

    Fixed in 1.8.2

Event History

Aug 19, 2026
CVE Published
via MITRE·12:38 PM
Data Sourced
via MITRE·12:38 PM
RemedyDescriptionSeverityWeakness

Frequently Asked Questions

1

Who can exploit this issue?

The vulnerability is described as customer PHP object injection. Exploitation does not require authentication or user interaction, according to the supplied vector (PR:N/UI:N).

2

What is the potential impact?

The supplied severity vector indicates network-reachable exploitation with low attack complexity and high impact on confidentiality, integrity, and availability. The issue is rated critical at 9.8.

3

Which plugin versions are affected?

Flexible Subscriptions versions 1.8.1 and earlier are identified as affected.

Contact

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