CVE-2026-97283

WordPress Advanced Post Manager plugin <= 4.5.5 - PHP Object Injection vulnerability

9.8 Critical

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.

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

0.34%Unchanged since Oct 6, 2026

What each source reports

CVE List Score used 9.8

WordPress Advanced Post Manager plugin <= 4.5.5 - PHP Object Injection vulnerability

Record: CVE-2026-97283
CVSS 3.1: 9.8 CriticalCVSS: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-2026-92590 9.8

Record: EUVD-2026-92590
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-52qx-gr3f-hfqm 9.8

Deserialization of Untrusted Data vulnerability in Liquid Web / StellarWP Advanced Post Manager...

Record: GHSA-52qx-gr3f-hfqm
CVSS 3.1: 9.8 CriticalCVSS: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 9.8

Record: CVE-2026-97283
CVSS 3.1: 9.8 CriticalCVSS: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

liquid web / stellarwp advanced post manager

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-97283 is a critical vulnerability (CVSS 9.8) in Liquid Web / Stellarwp Advanced Post Manager, published October 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 28th percentile. No source names a fixed version.