CVE-2018-20156: The WP Maintenance Mode plugin before 2.0.7 for WordPress allows remote authenticated "site administrator" use

Q: How do I fix CVE-2018-20156?

wp maintenance mode: upgrade to 2.0.7. Exact commands for each OS are on this page.

Q: Is CVE-2018-20156 being exploited?

CVE-2018-20156 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-20156 affect?

CVE-2018-20156 affects wp maintenance mode. Severity is high (CVSS 7.2). The WP Maintenance Mode plugin before 2.0.7 for WordPress allows remote authenticated "site administrator" users to execute arbitrary PHP code throughout a multisite network.

This month

HIGH 7.2UPGRADE

CVE-2018-20156 is a high-severity flaw (CVSS 7.2) affecting wp maintenance mode. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The WP Maintenance Mode plugin before 2.0.7 for WordPress allows remote authenticated "site administrator" users to execute arbitrary PHP code throughout a multisite network.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-20
Published	2018-12-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: designmodo

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-12-14 22:29 UTCPublished CVE record published
2026-06-17 01:52 UTCUpdated Record last modified

designmodo wp maintenance mode UPGRADE

Affected: < 2.0.7

Fixed in: 2.0.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wp-maintenance-mode || rpm -q wp-maintenance-mode || wp-maintenance-mode --version

2. UPGRADE to 2.0.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wp-maintenance-mode

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wp-maintenance-mode

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-20156?

wp maintenance mode: upgrade to 2.0.7. Exact commands for each OS are on this page.

Is CVE-2018-20156 being exploited?

CVE-2018-20156 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-20156 affect?

CVE-2018-20156 affects wp maintenance mode. Severity is high (CVSS 7.2). The WP Maintenance Mode plugin before 2.0.7 for WordPress allows remote authenticated "site administrator" users to execute arbitrary PHP code throughout a multisite network.

How urgent is CVE-2018-20156?

Priority 44/100. High severity

Software pages

WordPress vulnerabilities · PHP vulnerabilities

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CVE-2018-20154 MEDIUM 4.3 UPGRADE The WP Maintenance Mode plugin before 2.0.7 for WordPress allows remote authenticated users to discover all su

References

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