What is CVE-2026-110378?

CVE-2026-110378 is a medium-severity vulnerability in Wp E-Signature Ninja Forms Signature Contract Add-On, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-10-15.

How severe is CVE-2026-110378?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Wp E-Signature Ninja Forms Signature Contract Add-On

CVE-2026-110378

Missing Authorization vulnerability in WP E-Signature Ninja Forms Signature Contract Add-On ninja-signature-contract-forms-add-on allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Ninja Forms Signature Contract Add-On: from n/a through 3.2.5.

Vulnerability class: Broken Access Control

Published 2026-10-15 · last modified 2026-10-15.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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

Wp E-Signature Ninja Forms Signature Contract Add-On

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

patchstack.com/database/wordpress/plugin/ninja-signature-contract-forms-add-on/… (vdb-entry)

Frequently asked questions

What is CVE-2026-110378?: CVE-2026-110378 is a medium-severity vulnerability in Wp E-Signature Ninja Forms Signature Contract Add-On, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-10-15.
How severe is CVE-2026-110378?: Medium severity. CVSS v3 base score is 5.3 out of 10.