WP BASE Booking of Appointments, Services and Events <= 6.3.1 — Authenticated (Subscriber+) Privilege Escalation
CVE-2026-59541Published · Updated Action summary
Affected: ≤6.3.1Update to 6.3.2 or newer
All remediation steps- Severity
- Critical9.8
- CVSS
- 9.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
WP BASE Booking of Appointments, Services and Events wp-base-booking-of-appointments-services-and-events
- Affected≤ 6.3.1
- Patched in6.3.2
Update to 6.3.2 or newer.
You are affected if you run ≤ 6.3.1. Version 6.3.2 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WP BASE Booking of Appointments, Services and Events.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 6.3.2, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch WP BASE Booking of Appointments, Services and Events to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Afan.
The WP BASE Booking of Appointments, Services and Events plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 6.3.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to elevate their privileges to that of an administrator.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in WP BASE Booking of Appointments, Services and Events
All 12| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.3 | Authenticated (Subscriber+) Privilege Escalation ≤6.5.0Update to 6.5.1 | CVE-2026-123064 | |
| Medium6.3 | Authenticated (Subscriber+) Privilege Escalation ≤6.5.2Update to 6.6.1 | CVE-2026-118086 | |
| Medium6.5 | Authenticated (Subscriber+) SQL Injection ≤6.4.0Update to 6.5.0 | CVE-2026-103066 | |
| High7.5 | Unauthenticated SQL Injection ≤6.4.0Update to 6.5.0 | CVE-2026-103352 | |
| Medium6.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting ≤6.3.2Update to 6.4.0 | CVE-2026-73402 |
- Medium6.3Authenticated (Subscriber+) Privilege Escalation
≤6.5.0Update to 6.5.1
- Medium6.3Authenticated (Subscriber+) Privilege Escalation
≤6.5.2Update to 6.6.1
- Medium6.5Authenticated (Subscriber+) SQL Injection
≤6.4.0Update to 6.5.0
- High7.5Unauthenticated SQL Injection
≤6.4.0Update to 6.5.0
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting
≤6.3.2Update to 6.4.0
Timeline
CVE published
Severity critical, CVSS 9.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.