# CVE-2026-103366: Information disclosure in Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress

> Unauthenticated attackers can read other users' appointment and cart details by manipulating booking and cart ID parameters in the LatePoint WordPress plugin.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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:** 14 Oct 2026
- **Updated:** 15 Oct 2026
- **Also known as:** GHSA-3pf7-5297-2ffv

## What is CVE-2026-103366?

CVE-2026-103366 is a high-severity vulnerability in Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 5.7.3 via the `booking[id]` and `cart[id]` parameters on the `steps__reload_booking_form_summary_panel` and `steps__start` public routes (reachable through wp_ajax_nopriv_latepoint_route_call). This is due to `OsStepsHelper::set_required_objects()` feeding raw request parameters into `set_booking_object()` and `set_cart_object()`, which call `OsModel::set_data()` and load an arbitrary booking or cart row by primary key with no ownership check — the ownership guard the vendor added for the earlier disclosure lives only inside `OsStepsHelper::load_step()` and does not cover the sibling routes or `cart[id]` at all. This makes it possible for unauthenticated attackers to enumerate sequential booking / cart identifiers and read other customers' appointment details (service name, agent, date/time, duration, price breakdown, status) and other shoppers' pending checkout contents directly from the JSON responses.

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

## Which versions are affected by CVE-2026-103366?


## How do I fix CVE-2026-103366?

No fix has been published for CVE-2026-103366 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-103366 being exploited?

There is no known exploitation of CVE-2026-103366 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-103366 and fix it if it is affected.

What it is: CVE-2026-103366 is a high-severity vulnerability in Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress, published on 14 Oct 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-2026-103366 in the wild and no public exploit code.

Affected product: Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress. 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-2026-103366/ (Markdown: https://insights.sbomify.com/CVE-2026-103366/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-103366
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-103366
- OSV: https://osv.dev/vulnerability/CVE-2026-103366

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-103366/
Summaries are generated and may contain mistakes; the official description above is the record.