CMP – Coming Soon & Maintenance Plugin by NiteoThemes 4.1.19 — 4.1.20 - Missing Authorization to Unauthenticated Maintenance Mode Bypass
CVE-2026-101138Published · Updated Action summary
Affected: 4.1.19 – 4.1.20Update to 4.1.21 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-863 Incorrect Authorization
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
CMP – Coming Soon & Maintenance Plugin by NiteoThemes cmp-coming-soon-maintenance
- Affected4.1.19 – 4.1.20
- Patched in4.1.21
Update to 4.1.21 or newer.
You are affected if you run 4.1.19 – 4.1.20. Version 4.1.21 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under CMP – Coming Soon & Maintenance Plugin by NiteoThemes.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 4.1.21, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch CMP – Coming Soon & Maintenance Plugin by NiteoThemes to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Sanjeev Kumar.
The CMP – Coming Soon & Maintenance Plugin by NiteoThemes plugin for WordPress is vulnerable to unauthorized access in versions 4.1.19 through 4.1.20. This is due to missing normalization (URL-decoding and lowercasing) of stored custom URL patterns before comparison with fnmatch, combined with construction of the current URL from a spoofable source rather than home_url(). This makes it possible for unauthenticated attackers to view pages that should be blocked by maintenance mode by crafting URLs with percent-encoded characters or mixed case that fail to match the stored URL patterns, bypassing the maintenance mode restriction entirely. At least one custom URL pattern must be configured in the plugin's page whitelist or blacklist settings.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in CMP – Coming Soon & Maintenance Plugin by NiteoThemes
All 13| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Coming Soon & Maintenance <= 4.1.19 - Unauthenticated Maintenance Mode Bypass ≤4.1.19Update to 4.1.20 | CVE-2026-13413 | |
| High7.2 | Authenticated (Editor+) Privilege Escalation via Arbitrary Option Update to cmp_ajax_import_settings AJAX Action ≤4.1.17Update to 4.1.18 | CVE-2026-12470 | |
| Medium4.7 | Authenticated (Editor+) Privilege Escalation <4.1.18Update to 4.1.18 | CVE-2026-13415 | |
| Medium5.3 | Missing Authorization to Unauthenticated Settings Change <4.1.18Update to 4.1.18 | CVE-2026-13414 | |
| Medium4.4 | Authenticated (Editor+) Stored Cross-Site Scripting <4.1.18Update to 4.1.18 | CVE-2026-13416 |
- Medium5.3Coming Soon & Maintenance <= 4.1.19 - Unauthenticated Maintenance Mode Bypass
≤4.1.19Update to 4.1.20
- High7.2Authenticated (Editor+) Privilege Escalation via Arbitrary Option Update to cmp_ajax_import_settings AJAX Action
≤4.1.17Update to 4.1.18
- Medium4.7Authenticated (Editor+) Privilege Escalation
<4.1.18Update to 4.1.18
- Medium5.3Missing Authorization to Unauthenticated Settings Change
<4.1.18Update to 4.1.18
- Medium4.4Authenticated (Editor+) Stored Cross-Site Scripting
<4.1.18Update to 4.1.18
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.