What is CVE-2026-3155?

CVE-2026-3155 is a low-severity vulnerability in Onesignal – Web Push Notifications, classified under Missing Authorization. CVSS score: 3.1/10. Published 2026-04-16.

How severe is CVE-2026-3155?

Low severity. CVSS v3 base score is 3.1 out of 10.

Auth bypass in Onesignal – Web Push Notifications

CVE-2026-3155

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. Thi…

Vulnerability class: Broken Access Control

EPSS: 0.000 (1.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Onesignal – Web Push Notifications — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

www.wordfence.com/threat-intel/vulnerabilities/id/58337bbc-ba10-4876-b91c-78657…
plugins.trac.wordpress.org/changeset/3501190/onesignal-free-web-push-notificati…

Frequently asked questions

What is CVE-2026-3155?: CVE-2026-3155 is a low-severity vulnerability in Onesignal – Web Push Notifications, classified under Missing Authorization. CVSS score: 3.1/10. Published 2026-04-16.
How severe is CVE-2026-3155?: Low severity. CVSS v3 base score is 3.1 out of 10.