TI-2026-69632 Aliases CVE-2026-105436 GHSA-c5vm-w849-ffj7

Object injection in MainWP Child WordPress plugin

MEDIUM 40CWE-502Published 2026-10-08 · Updated 2026-10-09

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

MainWP Child WordPress plugin versions through 6.2.1 are affected. The plugin deserializes untrusted data, which allows object injection (CWE-502). A remote attacker with no privileges can exploit it when a user performs an action, with high impact to confidentiality, integrity and availability.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00245 15th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
MainWP	MainWP Child	up to 6.2.1	—	No fix listed	CNA

MainWP Child VendorMainWP Affected up to 6.2.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for MainWP Child.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-08 Threatist record created from CVE-2026-105436
2026-10-09 Alias added: GHSA-c5vm-w849-ffj7
2026-10-10 CISA SSVC decision points changed
2026-10-10 Priority changed: MEDIUM → LOW
2026-10-10 Priority changed: LOW → MEDIUM

References

Other 1

https://patchstack.com/database/wordpress/plugin/mainwp-child/vulnerability/wordpress-mainwp-child-plugin-6-2-1-deserialization-of-untrusted-data-vulnerability?_s_id=cve

TI-2023-09477 WordPress MainWP File Uploader Extension Plugin <= 4.1 - Unauthenticated Arbitrary File Upload Vulnerability CVSS 3.1CRITICAL 10.0
TI-2023-09550 WordPress MainWP Broken Links Checker Extension Plugin <= 4.0 is vulnerable to SQL Injection CVSS 3.1CRITICAL 9.8
TI-2023-09470 Code injection in MainWP Code Snippets Extension CVSS 3.1CRITICAL 9.9
TI-2024-09995 MainWP Child <= 5.3.3 - Missing Authorization to Unauthenticated Privilege Escalation CVSS 3.1HIGH 8.1
TI-2023-09480 WordPress MainWP Maintenance Extension Plugin <= 4.1.1 is vulnerable to SQL Injection CVSS 3.1HIGH 8.8
TI-2023-09475 WordPress MainWP Google Analytics Extension Plugin <= 4.0.4 - SQL Injection vulnerability CVSS 3.1HIGH 8.8

See all 24 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences