What is CVE-2026-103304?

CVE-2026-103304 is a medium-severity vulnerability in Easync Booking, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-10-15.

How severe is CVE-2026-103304?

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

Auth bypass in Easync Booking

CVE-2026-103304

The eaSYNC Booking WordPress plugin before 1.3.31 does not perform authorization or nonce checks on several of its cancellation-related AJAX actions, allowing unauthenticated users to create booking cancellation requests, trigger booking notification emails, and overwrite the content of the emails the site sends.

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:N/I:L/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

Easync Booking

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

wpscan.com/vulnerability/99069eac-aa52-41da-9d63-3fb9e2a05f4a/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-103304?: CVE-2026-103304 is a medium-severity vulnerability in Easync Booking, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-10-15.
How severe is CVE-2026-103304?: Medium severity. CVSS v3 base score is 5.3 out of 10.