WP BASE Booking plugin: Privilege escalation to administrator
Summary
WP BASE Booking, a WordPress plugin for appointment and service bookings, contains a privilege escalation vulnerability in all versions up to and including 6.5.2. An authenticated user with the Subscriber role can gain higher privileges, potentially up to administrator, which would give full control over the website. No official fix has been confirmed yet, and the vulnerability is not known to be exploited in the wild.
Affected
- WP BASE Booking (WordPress plugin) by Hakan Ozevin, all versions up to and including 6.5.2
- Attacker requires a valid Subscriber account
Fixed in
- Unknown. A third-party source indicates version 6.5.3, but this is not confirmed by the vendor.
Workaround
- No vendor or CVE-specific workaround known.
- Disable public self-registration if it is not needed.
- Review accounts with the Subscriber role and recent role changes.
Exploitation
- Not known to be exploited in the wild; not listed in CISA KEV.
- No public exploit or technical details are known according to VulDB.
- Patchstack rates the issue as high priority.
Our recommendation
- Check whether WP BASE Booking is installed and which version is running on client sites.
- Disable public self-registration where it is not required.
- Review Subscriber accounts and recent role changes, especially to administrator or editor.
- Update to the vendor's fixed release once confirmed; until then, monitor the plugin for updates and restrict access.
- Monitor for unexpected administrator accounts.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Patchstack vulnerability record CVE-2026-118086 patchstack.com
- VulDB entry 429317 vuldb.com
- Positive Technologies record PT-2026-133764 vulners.com
- OffSeq threat radar CVE-2026-118086 radar.offseq.com
- Strix CVE-2026-118086 www.strix.ai
- WordPress.org plugin page wordpress.org
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 08:42.
Original description (NVD)
Subscriber Privilege Escalation in WP BASE Booking <= 6.5.2 versions.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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