CVE-2026-39601

LOW 3.7

WordPress Booking Calendar plugin <= 11.8.4 - Race Condition vulnerability

CVSS Score

3.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-362
Vendor	wpdevelop
Product	booking calendar
Published	Oct 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

WPdevelop / Booking Calendar

0 ≤ 11.8.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/wordpress/plugin/booking/vulnerability/wordpress-booking-calendar-plugin-11-8-4-race-condition-vulnerability?_s_id=cve

Credits

Ananda Dhakal (Patchstack)