CVE-2026-61962

WP BASE Booking of Appointments, Services and Events <= 6.3.0 - Unauthenticated Remote Code Execution

2026-08-11 00:00
buitu

Strategic Overview

Status
Patched in 6.3.1
Affected Plugin
WP BASE Booking of Appointments, Services and Events
Affected Version
<= 6.3.0
CVSS
9.8Critical
Weakness type
CWE-94 · Improper Control of Generation of Code ('Code Injection')
CVE
CVE-2026-61962
View all WP BASE Booking of Appointments, Services and Events vulnerabilities

At a glance

CVE-2026-61962 is a critical-severity Improper Control of Generation of Code ('Code Injection') vulnerability in the WP BASE Booking of Appointments, Services and Events WordPress plugin, affecting versions <= 6.3.0. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 6.3.1; sites on affected versions should update now. Disclosed August 2026, reported by buitu.

Vulnerability Overview

The WP BASE Booking of Appointments, Services and Events plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 6.3.0. This makes it possible for unauthenticated attackers to execute code on the server.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-94: Improper Control of Generation of Code ('Code Injection')

Reaching this weakness in WP BASE Booking of Appointments, Services and Events <= 6.3.0 takes no account at all. Code injection means input from a request reaches a language construct that evaluates code, so the attacker's text is executed rather than treated as data.

The injected code runs with the web server's privileges, giving the attacker the same access to the database and filesystem as WordPress itself. For WP BASE Booking of Appointments, Services and Events the fix is 6.3.1: builds <= 6.3.0 are affected, anything from 6.3.1 onward is not.

Remediation

Update to version 6.3.1, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: WP BASE Booking of Appointments, Services and Events 6.3.1 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Login Security

External References

https://www.cve.org/CVERecord?id=CVE-2026-61962https://www.wordfence.com/threat-intel/vulnerabilities/id/b0e19fc5-5e79-4383-827d-edd16443e596https://nvd.nist.gov/vuln/detail/CVE-2026-61962

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C