Vulnerability · Published Oct 5, 2026 · Assigned by Patchstack
CVE-2026-97283WordPress Advanced Post Manager plugin <= 4.5.5 - PHP Object Injection vulnerability
Critical 9.8
In plain English
A critical-severity unsafe deserialization in Advanced Post Manager from Liquid Web / StellarWP. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.3%top 71.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Deserialization of Untrusted Data vulnerability in Liquid Web / StellarWP Advanced Post Manager advanced-post-manager allows Object Injection.This issue affects Advanced Post Manager: from n/a through 4.5.5.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Liquid Web / StellarWP | Advanced Post Manager | 0 – through 4.5.5 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H