What is CVE-2026-97283?

CVE-2026-97283 is a critical-severity vulnerability in Liquid Web / Stellarwp Advanced Post Manager, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-10-05.

How severe is CVE-2026-97283?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Liquid Web / Stellarwp Advanced Post Manager

CVE-2026-97283

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.

Vulnerability class: Insecure Deserialization

Published 2026-10-05 · last modified 2026-10-06.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Liquid Web / Stellarwp Advanced Post Manager

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

patchstack.com/database/wordpress/plugin/advanced-post-manager/vulnerability/wo… (vdb-entry)

Frequently asked questions

What is CVE-2026-97283?: CVE-2026-97283 is a critical-severity vulnerability in Liquid Web / Stellarwp Advanced Post Manager, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-10-05.
How severe is CVE-2026-97283?: Critical severity. CVSS v3 base score is 9.8 out of 10.