7.5

CVE-2026-27366: mainwp mainwp_child Missing Authorization

CVSS: 7.5v3.1HighDeferred
Published 25-06-2026Last modified 29-06-2026
Open JSON

Vulnerability summary

CVE-2026-27366 is a high (CVSS 7.5) Missing Authorization vulnerability in mainwp mainwp_child. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 22.7% of scored vulnerabilities. Fixed in 6.1.2.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.31%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 25-06-2026
    PublishedVulnerability first disclosed.
  2. 29-06-2026
    Last modifiedVulnerability information updated.

Description

Unauthenticated Broken Access Control in MainWP Child <= 6.1.1 versions.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

0.00 pp

From 0.31% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.31%

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≤ 6.1.1 (fixed in 6.1.2)

2 vendors · 2 products

References

2 links