Improper input validation in Gvectors Wpdiscuz
CVE-2026-22204
wpDiscuz before 7.6.47 contains an email header injection vulnerability that allows attackers to manipulate mail recipients by injecting malicious data into the comment_author_email cookie. Attackers can craft a malicious cookie value that, when processed through urldecode() and passed to wp_mail() functions, enables header injection to alter email recipients or inject additional headers.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (11.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · 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-unsanitized-cookie-email-used-as-w… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-22204?
- CVE-2026-22204 is a low-severity vulnerability in Gvectors Wpdiscuz, classified under Improper Input Validation. CVSS score: 3.7/10. Published 2026-03-13.
- How severe is CVE-2026-22204?
- Low severity. CVSS v3 base score is 3.7 out of 10.