Known vulnerabilities in Companion Auto Update

Manage all updates on your WordPress site. Stay in the know with several optional e-mail notifications and logs. For free.

4Reported vulnerabilities

9.8Highest CVSS score

3.9.4Latest version

40,000+Active installs

What to do now

Update Companion Auto Update to 3.9.3 or later. 4 of these have a fixed version available. Updating resolves them.

Plugin last updated: March 21, 2026 / Tested up to WordPress: 6.9.7 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2018-20973	Critical 9.8	2.0%	Before 3.2.1	`3.2.1`	August 16, 2019
CVE-2018-20972	High 8.8	0.6%	Before 3.2.1	`3.2.1`	August 16, 2019
WF-d969fb35-2ee9-42ca-a9e8-f6453a1e6be9	High 7.2	—	Before 3.3.6	`3.3.6`	January 14, 2019
CVE-2025-4369	Medium 5.5	0.2%	0 to 3.9.2 (inclusive)	`3.9.3`	July 15, 2025

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.