What is CVE-2026-105436?

CVE-2026-105436 is a high-severity vulnerability in Mainwp Child, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-10-08.

How severe is CVE-2026-105436?

High severity. CVSS v3 base score is 8.8 out of 10.

Deserialization in Mainwp Child

CVE-2026-105436

Deserialization of Untrusted Data vulnerability in MainWP MainWP Child mainwp-child allows Object Injection.This issue affects MainWP Child: from n/a through 6.2.1.

Vulnerability class: Insecure Deserialization

Published 2026-10-08 · last modified 2026-10-08.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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

Mainwp Child

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

patchstack.com/database/wordpress/plugin/mainwp-child/vulnerability/wordpress-m… (vdb-entry)

Frequently asked questions

What is CVE-2026-105436?: CVE-2026-105436 is a high-severity vulnerability in Mainwp Child, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-10-08.
How severe is CVE-2026-105436?: High severity. CVSS v3 base score is 8.8 out of 10.