Auth bypass in Notiqoo

CVE-2026-19840

The Notiqoo WordPress plugin before 1.4.14 does not have capability checks on several of its AJAX actions and builds the name of the option to write from user input, allowing users with a role as low as contributor to modify arbitrary WordPress options, which can be used to deactivate Notiqoo WordPress plugin before 1.4.14 and to lock every administrator out of the site.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (12.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-19840: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Notiqoo

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-19840?
CVE-2026-19840 is a medium-severity vulnerability in Notiqoo, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-09-10.
How severe is CVE-2026-19840?
Medium severity. CVSS v3 base score is 6.5 out of 10.