Vulnerability · Published Aug 19, 2026 · Assigned by Patchstack
CVE-2026-73364WordPress Flexible Subscriptions plugin <= 1.8.1 - PHP Object Injection vulnerability
Critical 9.8
In plain English
A critical-severity unsafe deserialization in Flexible Subscriptions from wpdesk. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.6%top 53.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Customer PHP Object Injection in Flexible Subscriptions <= 1.8.1 versions.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| wpdesk | Flexible Subscriptions | n/a – through 1.8.1 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H