What is CVE-2026-115591?

CVE-2026-115591 is a high-severity vulnerability in Supsystic Contact Form By, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 7.5/10. Published 2026-10-28.

How severe is CVE-2026-115591?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Supsystic Contact Form By

CVE-2026-115591

Insertion of Sensitive Information Into Sent Data vulnerability in Supsystic Contact Form by Supsystic contact-form-by-supsystic allows Retrieve Embedded Sensitive Data.This issue affects Contact Form by Supsystic: from n/a through 1.10.5.

Published 2026-10-28 · last modified 2026-10-28.

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:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Supsystic Contact Form By

Weakness classification (CWE)

CWE-201 — Insertion of Sensitive Information into Sent Data

References

patchstack.com/database/wordpress/plugin/contact-form-by-supsystic/vulnerabilit… (vdb-entry)

Frequently asked questions

What is CVE-2026-115591?: CVE-2026-115591 is a high-severity vulnerability in Supsystic Contact Form By, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 7.5/10. Published 2026-10-28.
How severe is CVE-2026-115591?: High severity. CVSS v3 base score is 7.5 out of 10.