OneSignal – Web Push Notifications: A security weakness
OneSignal – Web Push Notifications is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation.
- Component
- OneSignal – Web Push Notifications
- Plugin slug
onesignal-web-push-notifications- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Dec 15, 2025
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Dec 15, 2025 and is one of 2 known issues for this plugin.
Update, patch or deactivate.
Update OneSignal – Web Push Notifications to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The OneSignal – Web Push Notifications plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the settings handling functionality in all versions up to, and including, 3.6.1. This is due to the plugin processing POST requests without verifying user capabilities or nonces. This makes it possible for unauthenticated attackers to overwrite the OneSignal App ID, REST API key, and notification behavior via direct POST requests.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N