Is CVE-2026-39493 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-39493 being exploited in the wild.

How severe is CVE-2026-39493?

Critical severity, with a CVSS score of 9.3, published 15 June 2026.

Which products and versions are affected?

NSquared Simply Schedule Appointments <= 1.6.9.27.

Is there a fix for CVE-2026-39493?

A patch was published on 2026-04-08: Version 1.6.9.29 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-39493 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-39493?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-39493: NSquared Simply Schedule Appointments SQL injection

Q: Is there a fix for CVE-2026-39493?

A patch was published on 2026-04-08: Version 1.6.9.29 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-39493 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-39493?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-39493 · Severity: critical · CVSS 9.3 · Published 2026-06-15

Simply Schedule Appointments is a WordPress plugin used by businesses to manage client bookings and appointments. A security flaw allows unauthorized individuals to interact directly with the website's database without needing a password. This could lead to the theft of sensitive customer information, appointment records, or other private data stored on the site.

Quick answers

Is CVE-2026-39493 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-39493 being exploited in the wild.
How severe is CVE-2026-39493?: Critical severity, with a CVSS score of 9.3, published 15 June 2026.
Which products and versions are affected?: NSquared Simply Schedule Appointments <= 1.6.9.27.
Is there a fix for CVE-2026-39493?: A patch was published on 2026-04-08: Version 1.6.9.29 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-39493 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-39493?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The Simply Schedule Appointments plugin for WordPress is vulnerable to an unauthenticated SQL injection due to improper neutralization of special elements used in an SQL command (CWE-89). The vulnerability exists in versions up to and including 1.6.9.27. A remote, unauthenticated attacker can exploit this flaw via a network request to execute arbitrary SQL queries. This allows for the unauthorized retrieval of sensitive data from the database. The issue has been addressed in version 1.6.9.29.

Affected products

NSquared Simply Schedule Appointments <= 1.6.9.27

Timeline

2026-01-25: other: Reported by researcher Doan Dinh Van
2026-04-08: advisory: Patchstack published advisory
2026-06-15: disclosed: CVE published to NVD
2026-04-08: patched: Version 1.6.9.29 released

References

https://patchstack.com/database/wordpress/plugin/simply-schedule-appointments/vulnerability/wordpress-simply-schedule-appointments-plugin-1-6-9-27-sql-injection-vulnerability-2?_s_id=cve

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