Unauthenticated Privilege Escalation in WP BASE Booking by Patchstack
CVE-2026-39587

8.1HIGH

Key Information:

Vendor

WordPress
Status
WP Base Booking
Vendor
CVE Published:
15 June 2026

What is CVE-2026-39587?

The WP BASE Booking plugin, used for managing appointments and events on WordPress sites, is susceptible to an unauthenticated privilege escalation flaw. This vulnerability allows malicious actors to gain higher privileges without proper authentication, potentially compromising site integrity and data security. Users are advised to update to the latest version to mitigate risks.

Affected Version(s)

WP BASE Booking <= 5.9.0

References

https://patchstack.com/database/wordpress/plugin/wp-base-...
vdb-entry

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jarno Vos (jrn5151) | Patchstack Bug Bounty Program
.