# CVE-2026-73395: Missing authorization in Booking calendar, Appointment Booking System

> Unauthenticated attackers can access or modify appointment data via IDOR in the Booking calendar plugin.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Aug 2026
- **Updated:** 18 Aug 2026
- **Also known as:** GHSA-wrj4-qvh9-mx4r

## What is CVE-2026-73395?

CVE-2026-73395 is a medium-severity missing authorization vulnerability in wpdevart Booking calendar, Appointment Booking System, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Unauthenticated Insecure Direct Object References (IDOR) in Booking calendar, Appointment Booking System <= 3.2.36 versions.

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

## Which versions are affected by CVE-2026-73395?


## How do I fix CVE-2026-73395?

No fix has been published for CVE-2026-73395 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-73395 being exploited?

There is no known exploitation of CVE-2026-73395 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73395 and fix it if it is affected.

What it is: CVE-2026-73395 is a medium-severity missing authorization vulnerability in wpdevart Booking calendar, Appointment Booking System, published on 18 Aug 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-2026-73395 in the wild and no public exploit code.

Affected product: wpdevart Booking calendar, Appointment Booking System. 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-2026-73395/ (Markdown: https://insights.sbomify.com/CVE-2026-73395/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73395
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73395
- OSV: https://osv.dev/vulnerability/CVE-2026-73395

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-73395/
Summaries are generated and may contain mistakes; the official description above is the record.