Vulnerability · Published Oct 2, 2026 · Assigned by Patchstack
CVE-2026-39601WordPress Booking Calendar plugin <= 11.8.4 - Race Condition vulnerability
Low 3.7
In plain English
A low-severity race condition in Booking Calendar from WPdevelop. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities).
Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)0.2%top 95.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WPdevelop | Booking Calendar | 0 – through 11.8.4 |
Weakness: CWE-362 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N