OneSignal – Web Push Notifications

onesignal-free-web-push-notifications · plugin

Known security vulnerabilities for OneSignal – Web Push Notifications. Find out in seconds which version runs on your site with WP Lens.

2 known vulnerabilities

latest Apr 16, 2026

Listed on wordpress.org · latest 3.9.4 · last updated Sep 29, 2026 · 60K+ installs

wordpress.org status checked on Oct 2, 2026

Vulnerabilities

CVE-2019-15827login required
The onesignal-free-web-push-notifications plugin before 1.17.8 for WordPress has XSS via the subdomain parameter.
Medium 5.4
CVE-2026-3155subscriber+≤ 3.8.0
OneSignal – Web Push Notifications <= 3.8.0 - Missing Authorization to Authenticated (Subscriber+) Post Meta Deletion via 'post_id'
Low 3.1

The access label is read from the record's own text (e.g. “subscriber+”: subscriber and above). When the text names no role, CVSS decides between “login required” and “high privilege”; no role name is invented. “Needs a click”: the attack depends on a logged-in user following a link (CSRF, reflected XSS).

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