What is CVE-2023-23639?

CVE-2023-23639 is a medium-severity vulnerability in Mainwp Staging Extension, classified under Missing Authorization. CVSS score: 5.4/10. Published 2024-06-09.

How severe is CVE-2023-23639?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2023-23639 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Mainwp Staging Extension

CVE-2023-23639

Missing Authorization vulnerability in MainWP MainWP Staging Extension.This issue affects MainWP Staging Extension: from n/a through 4.0.3.

Vulnerability class: Broken Access Control

Published 2024-06-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

References

patchstack.com/database/vulnerability/mainwp-staging-extension/wordpress-mainwp… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2023-23639?: CVE-2023-23639 is a medium-severity vulnerability in Mainwp Staging Extension, classified under Missing Authorization. CVSS score: 5.4/10. Published 2024-06-09.
How severe is CVE-2023-23639?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2023-23639 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.