MainWP Child < 4.1.8 - Admin+ SQL Injection

published 2021-11-23 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11789

cvss: 7.2; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits: 0; none known

The MainWP Child WordPress plugin before 4.1.8 does not validate the orderby and order parameter before using them in a SQL statement, leading to an SQL injection exploitable by high privilege users such as admin when the Backup and Staging by WP Time Capsule plugin is installed

Patch / fix

fixed in 1

mainwp mainwp_child 4.1.8

Exploit prediction

1.28% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

wpscan.com https://wpscan.com/vulnerability/b09fe120-ab9b-44f2-b50d-3b4b299d6d15 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.0	AV:N/AC:M/Au:S/C:P/I:P/A:P

Affected products

Unknown MainWP Child - Securely connects sites to the MainWP WordPress Manager Dashboard

Classification

Weakness

CWE-89 Improper Neutralization of Special Elements used in an SQL Command

Technology feeds

WordPress rss critical rss

References

wpscan.com /vulnerability/b09fe120-ab9b-44f2-b50d-3b4b299d6d15
exploit, third-party-advisory

Sources

CVE List CVE-2021-24877
NVD CVE-2021-24877

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary