Add Custom Codes – Insert Header, Footer, Custom PHP Snippets, CSS, Javascript vulnerabilities
Plugin slug add-custom-codes · 4 known vulnerabilities · latest disclosed 2025-12-31 · WordPress.org page
Every listed vulnerability has a fix. Version 5.0 or later is not affected by any of them. If your site runs an older version, update it.
1 of 4 rated high or critical (CVSS 7 or more).
Known vulnerabilities in Add Custom Codes – Insert Header, Footer, Custom PHP Snippets, CSS, Javascript
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 4.3 | <= 4.80 | 5.0 | CVE-2025-62108 | 2025-12-31 | Advisory |
| Medium 6.4 | <= 4.80 | 5.0 | CVE-2025-62149 | 2025-12-31 | Advisory |
| Medium 4.3 | <= 4.80 | 5.0 | CVE-2025-62739 | 2025-12-05 | Advisory |
| High 8.8 | <= 4.80 | 5.0 | CVE-2025-30975 | 2025-08-14 | Advisory |
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Questions
Is the Add Custom Codes – Insert Header, Footer, Custom PHP Snippets, CSS, Javascript plugin safe to use?
All 4 known issues are fixed in current versions (5.0 or later). Keeping it updated is what matters.
How do I check which version of Add Custom Codes – Insert Header, Footer, Custom PHP Snippets, CSS, Javascript my site runs?
In WordPress go to Plugins > Installed Plugins. From the outside, the free PluginPeek scan below reads the version from the site's public files.
How do I fix a vulnerable plugin?
Make a full backup, then update it from Dashboard > Updates and check the site afterwards. If you would rather not, we can do it for a fixed $99, paid after you have checked the site.