Companion Auto Update vulnerabilities
Plugin slug companion-auto-update · 4 known vulnerabilities · latest disclosed 2025-07-14 · WordPress.org page
Every listed vulnerability has a fix. Version 3.9.3 or later is not affected by any of them. If your site runs an older version, update it.
3 of 4 rated high or critical (CVSS 7 or more).
Known vulnerabilities in Companion Auto Update
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 5.5 | <= 3.9.2 | 3.9.3 | CVE-2025-4369 | 2025-07-14 | Advisory |
| High 7.2 | < 3.3.6 | 3.3.6 | none | 2019-01-14 | Advisory |
| High 8.8 | < 3.2.1 | 3.2.1 | CVE-2018-20972 | 2018-10-02 | Advisory |
| Critical 9.8 | < 3.2.1 | 3.2.1 | CVE-2018-20973 | 2018-10-01 | Advisory |
Check if a site is affected
Enter a site address to see which version of Companion Auto Update and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the Companion Auto Update plugin safe to use?
All 4 known issues are fixed in current versions (3.9.3 or later). Keeping it updated is what matters.
How do I check which version of Companion Auto Update 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.