Is invite-anyone (WordPress plugin) vulnerable?

WordPress invite-anyone has 4 known advisories in the phpwarden feed. Feed 2026.10.29.1, updated 2026-10-28.

4advisories
1critical
0on CISA KEV
1no fix recorded
CVETitleSeverityCVSSAffectedFixed in
CVE-2017-18543The invite-anyone plugin before 1.3.16 for WordPress has incorrect access control for email-based invitations.critical9.8<1.3.161.3.16
CVE-2017-6955An issue was discovered in by-email/by-email.php in the Invite Anyone plugin before 1.3.15 for WordPress. A user is able to change the subjemedium5.3<=1.3.13–
CVE-2017-18545The invite-anyone plugin before 1.3.16 for WordPress has incorrect escaping of untrusted Dashboard and front-end input.high7.5<1.3.161.3.16
CVE-2017-18544The invite-anyone plugin before 1.3.16 for WordPress has admin-panel CSRF.high8.8<1.3.161.3.16

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

Install docs   How findings are ranked
A version is vulnerable when it falls inside an affected range and below the fixed version. phpwarden applies these ranges to the exact versions in your lockfile or install, so you only see what applies to you.