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Custom 404 Pro · Security record

Is Custom 404 Pro safe?

One known vulnerability affects the current version (3.16.0), and it has no fix yet.

Checked 2 days ago against the WPVulnerability database, for version 3.16.0.

How it’s looked after

Last release
Aug 30, 2026 (2 months ago)
Releases in the last year
19
Tested up to
WordPress 7.1.4
Active installs
7K+

14 known vulnerabilities

  • 1 critical
  • 3 high
  • 6 medium
  • 4 not rated

1 affects the current version. 1 has no fix yet.

Disclosed each year

  • 20193
  • 20238
  • 20241
  • 20252

Every known vulnerability in Custom 404 Pro

Newest first, with any that affect the current version at the top.

Questions about Custom 404 Pro’s security

Is Custom 404 Pro safe to use?

Yes: 1 known vulnerability affects version 3.16.0, according to WPVulnerability’s database. Until a fixed version is out, weigh the risk, or switch to an alternative.

Does Custom 404 Pro have known security vulnerabilities?

Yes: 1 known vulnerability affects version 3.16.0, according to WPVulnerability’s database.

Is Custom 404 Pro still maintained?

Yes. Its last release was 2 months ago. No support threads were opened in the last two months.

Is Custom 404 Pro compatible with the latest WordPress?

Yes. It’s tested up to WordPress 7.1.4, the current version.

Hear about the next one first

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Vulnerability data from WPVulnerability (CC0), which gathers records from CVE, Wordfence, Patchstack and WPScan. A clean record isn’t a guarantee: keep every plugin updated.