CVE-2026-39601

WordPress Booking Calendar plugin <= 11.8.4 - Race Condition vulnerability

3.7 Low

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: Low
Availability: None

Exploit likelihood

0.15%Unchanged since Oct 3, 2026

What each source reports

CVE List Score used 3.7

WordPress Booking Calendar plugin <= 11.8.4 - Race Condition vulnerability

Record: CVE-2026-39601
CVSS 3.1: 3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness: CWE-362
Updated: 2026-11-02

EUVDEUVD-2026-91664 3.7

Record: EUVD-2026-91664
CVSS 3.1: 3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-c83g-wfv6-9ghj 3.7

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')...

Record: GHSA-c83g-wfv6-9ghj
CVSS 3.1: 3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness: CWE-362
Updated: 2026-11-02

NVD 3.7

Record: CVE-2026-39601
CVSS 3.1: 3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness: CWE-362
Updated: 2026-11-02

Affected products

wpdevelop booking calendar

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-39601 is a low vulnerability (CVSS 3.7) in Wpdevelop Booking Calendar, published October 2, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.15%, the 4th percentile. No source names a fixed version.