How severe is CVE-2026-5229?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2026-5229 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in M615926 Receive Notifications After Form Submitting – Notify For Any Forms

CVE-2026-5229

The Form Notify plugin for WordPress is vulnerable to Authentication Bypass in versions up to and including 1.1.10. This is due to the plugin trusting user-controlled cookie data to determine which WordPress account to authenticate after a…

Vulnerability class: Broken Authentication

EPSS: 0.001 (33.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

M615926 Receive Notifications After Form Submitting – Notify For Any Forms — versions 0

Weakness classification (CWE)

CWE-287 — Improper Authentication

Public proof-of-concept exploits

xxconi/CVE-2026-5229

References

Frequently asked questions

What is CVE-2026-5229?: CVE-2026-5229 is a critical-severity vulnerability in M615926 Receive Notifications After Form Submitting – Notify For Any Forms, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-05-15.
How severe is CVE-2026-5229?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-5229 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.