PT-2026-33307 · Onesignal · Onesignal-Free-Web-Push-Notifications

Muhammad Sharief · Published 2026-04-16 · Updated 2026-04-16 · CVE-2026-3155

Mitre

CVSS v3.1

3.1

Low

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

The OneSignal – Web Push Notifications plugin for WordPress is vulnerable to authorization bypass in versions up to, and including, 3.8.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete OneSignal metadata for arbitrary posts.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-3155

Affected Products

Onesignal-Free-Web-Push-Notifications

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-3155 · Security Note
• https://plugins.trac.wordpress.org/changeset/3501190/onesignal-free-web-push-notifications · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/58337bbc-ba10-4876-b91c-78657afc67d1?source=cve · Note