8.8

CVE-2026-105436: mainwp mainwp_child Deserialization of Untrusted Data

CVSS: 8.8v3.1HighDeferred
Published 08-10-2026Last modified 09-10-2026
Open JSON

Vulnerability summary

CVE-2026-105436 is a high (CVSS 8.8) Deserialization of Untrusted Data vulnerability in mainwp mainwp_child. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.6% of scored vulnerabilities. Fixed in 6.2.2.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.25%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-10-2026
    PublishedVulnerability first disclosed.
  2. 09-10-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

09-10-202620-10-2026
EPSS score
0.25%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Mainwp1 product
Wordpress1 product
  • mainwp-child≤ 6.2.1 (fixed in 6.2.2)

2 vendors · 2 products

References

2 links