# CVE-2026-11398: Missing authorization in LatePoint – Calendar Booking Plugin for Appointments and Events

> Unauthenticated attackers can modify customer PII in LatePoint WordPress plugin if guest bookings are enabled.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Jul 2026
- **Updated:** 6 Jul 2026
- **Also known as:** GHSA-w64h-p64p-r649

## What is CVE-2026-11398?

CVE-2026-11398 is a medium-severity missing authorization vulnerability in LatePoint – Calendar Booking Plugin for Appointments and Events, published on 3 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The LatePoint – Calendar Booking Plugin for Appointments and Events plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.6.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to modify the personally identifiable information (first name, last name, phone number, and notes) of any existing customer record, including those linked to administrator accounts, by submitting the booking form with a known customer's email address. Exploitation requires the plugin to be configured with guest bookings enabled (is_customer_auth_disabled() returning true), which is necessary for the vulnerable unauthenticated code path in process_step_customer() to be reached.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-11398?


## How do I fix CVE-2026-11398?

No fix has been published for CVE-2026-11398 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-11398 being exploited?

There is no known exploitation of CVE-2026-11398 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-11398 and fix it if it is affected.

What it is: CVE-2026-11398 is a medium-severity missing authorization vulnerability in LatePoint – Calendar Booking Plugin for Appointments and Events, published on 3 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-11398 in the wild and no public exploit code.

Affected product: LatePoint – Calendar Booking Plugin for Appointments and Events. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-11398/ (Markdown: https://insights.sbomify.com/CVE-2026-11398/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-11398
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-11398
- OSV: https://osv.dev/vulnerability/CVE-2026-11398

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-11398/
Summaries are generated and may contain mistakes; the official description above is the record.