CSRF in Contact Form By Supsystic
CVE-2026-115299
The Contact Form by Supsystic WordPress plugin before 1.11.1 does not verify a CSRF nonce before saving its mail settings, allowing an attacker to overwrite the site's outbound mail configuration, including the SMTP server, its credentials and the notification recipient, by tricking a logged-in administrator into visiting a crafted page, which can route the Contact Form by Supsystic WordPress plugin before 1.11.1's contact-form notifications through infrastructure the attacker controls.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.001 (0.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 0.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
- Contact Form By Supsystic
Weakness classification (CWE)
References
- wpscan.com/vulnerability/102bbaf2-12c8-48b9-bacb-28de2baec45b/ (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-115299?
- CVE-2026-115299 is a medium-severity vulnerability in Contact Form By Supsystic, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2026-10-29.
- How severe is CVE-2026-115299?
- Medium severity. CVSS v3 base score is 5.4 out of 10.