Auth bypass in Gvectors Wpdiscuz
CVE-2026-22182
wpDiscuz before 7.6.47 contains an unauthenticated denial of service vulnerability that allows anonymous users to trigger mass notification emails by exploiting the checkNotificationType() function. Attackers can repeatedly call the wpdiscuz-ajax.php endpoint with arbitrary postId and comment_id parameters to flood subscribers with notifications, as the handler lacks nonce verification, authentication checks, and rate limiting.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (44.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.5% 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
Affected products
- Gvectors Wpdiscuz — versions 0, 7.6.47
Weakness classification (CWE)
References
- wordpress.org/plugins/wpdiscuz/ (Product, Release Notes, patch)
- wordpress.org/plugins/wpdiscuz/ (Product, product)
- www.vulncheck.com/advisories/wpdiscuz-before-unauthenticated-email-notification… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-22182?
- CVE-2026-22182 is a high-severity vulnerability in Gvectors Wpdiscuz, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-03-13.
- How severe is CVE-2026-22182?
- High severity. CVSS v3 base score is 7.5 out of 10.