# CVE-2026-15289: Booking calendar, Appointment Booking System <= 3.2.17 - Unauthenticated Time-Based SQL Injection via 'wpdevart_id'

> Unauthenticated attackers can extract sensitive database information via SQL injection in the Booking calendar plugin when the Pro version is active with specific settings.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/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:** 10 Jul 2026
- **Updated:** 10 Jul 2026
- **Also known as:** GHSA-937q-4w7r-c9jv

## What is CVE-2026-15289?

CVE-2026-15289 is a medium-severity SQL injection vulnerability in wpdevart Booking calendar, Appointment Booking System, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Booking calendar, Appointment Booking System plugin for WordPress is vulnerable to time-based SQL Injection via the ‘wpdevart_id’ parameter in all versions up to, and including, 3.2.17 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query.  This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. In order to exploit the vulnerability, the Pro version of the plugin must be installed and activated, with the 'Delete previous dates' option checked.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2026-15289?


## How do I fix CVE-2026-15289?

No fix has been published for CVE-2026-15289 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15289 being exploited?

There is no known exploitation of CVE-2026-15289 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15289 and fix it if it is affected.

What it is: CVE-2026-15289 is a medium-severity SQL injection vulnerability in wpdevart Booking calendar, Appointment Booking System, published on 10 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-2026-15289 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-2026-15289/ (Markdown: https://insights.sbomify.com/CVE-2026-15289/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15289
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15289
- OSV: https://osv.dev/vulnerability/CVE-2026-15289

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-15289/
Summaries are generated and may contain mistakes; the official description above is the record.