CVE-2026-89413
CVE-2026-89413
The Filter Gallery plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.4. 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 any arbitrary Filter Gallery records — including all associated filters, image mappings, settings, and details options — by supplying attacker-controlled gallery IDs. The nonce bypass requires omitting the nonce POST field entirely rather than submitting an invalid value, as a present-but-invalid nonce is correctly rejected.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (45.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/0487c6dd-7453-4473-9a13-6b699…
- plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php
- plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php
- plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php
- plugins.trac.wordpress.org/changeset
Frequently asked questions
- What is CVE-2026-89413?
- CVE-2026-89413 is a high-severity vulnerability, classified under Missing Authorization. CVSS score: 8.1/10. Published 2026-09-18.
- How severe is CVE-2026-89413?
- High severity. CVSS v3 base score is 8.1 out of 10.