What is CVE-2026-39601?

CVE-2026-39601 is a low-severity vulnerability in Wpdevelop Booking Calendar, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 3.7/10. Published 2026-10-02.

How severe is CVE-2026-39601?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Wpdevelop Booking Calendar

CVE-2026-39601

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in WPdevelop Booking Calendar booking allows Leveraging Race Conditions.This issue affects Booking Calendar: from n/a through 11.8.4.

Vulnerability class: Race Condition

Published 2026-10-02 · last modified 2026-10-02.

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

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

Wpdevelop Booking Calendar

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

patchstack.com/database/wordpress/plugin/booking/vulnerability/wordpress-bookin… (vdb-entry)

Frequently asked questions

What is CVE-2026-39601?: CVE-2026-39601 is a low-severity vulnerability in Wpdevelop Booking Calendar, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 3.7/10. Published 2026-10-02.
How severe is CVE-2026-39601?: Low severity. CVSS v3 base score is 3.7 out of 10.