# CVE-2026-12657: LatePoint <= 5.6.2 - Unauthenticated Insecure Direct Object Reference to Arbitrary Creation via 'service_id' Parameter

> Unauthenticated attackers can create unauthorized bookings for admin-only services by manipulating the service_id parameter, bypassing access controls.

- **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:** 2 Jul 2026
- **Updated:** 2 Jul 2026
- **Also known as:** GHSA-p2v5-84j7-pc37

## What is CVE-2026-12657?

CVE-2026-12657 is a medium-severity missing authorization vulnerability in LatePoint – Calendar Booking Plugin for Appointments and Events, published on 2 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 Insecure Direct Object Reference in all versions up to, and including, 5.6.2 via the 'service_id' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to create approved bookings against services explicitly restricted to admins and agents, consuming restricted appointment capacity and triggering unauthorized bookings for admin/agent-only services. The bypass works via both the params[booking][service_id] parameter in steps__load_step and the presets[selected_service] parameter in steps__start, both of which are publicly accessible without authentication.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-12657?


## How do I fix CVE-2026-12657?

No fix has been published for CVE-2026-12657 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-12657 being exploited?

There is no known exploitation of CVE-2026-12657 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12657 and fix it if it is affected.

What it is: CVE-2026-12657 is a medium-severity missing authorization vulnerability in LatePoint – Calendar Booking Plugin for Appointments and Events, published on 2 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-2026-12657 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-2026-12657/ (Markdown: https://insights.sbomify.com/CVE-2026-12657/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12657
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12657
- OSV: https://osv.dev/vulnerability/CVE-2026-12657

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-12657/
Summaries are generated and may contain mistakes; the official description above is the record.