# CVE-2026-39736: Crocoblock JetEngine SQL injection

Source: https://junglewise.ai/threats/cve-2026-39736-improper-neutralization-of-special-elements-used-in-an-sql  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-29. Updated: 2026-10-29  
License: CC BY 4.0 with a link back

CVE-2026-39736 · Severity: high · CVSS 8.5 · Published 2026-10-29

JetEngine is a WordPress plugin that enables site builders to create dynamic, database-driven websites without coding. A SQL injection vulnerability in versions up to 3.9.0.1 allows attackers with contributor-level access to read, modify, or delete the entire database, including user accounts and sensitive data. This could lead to account takeover, data theft, and website defacement.

Technologies: [Crocoblock JetEngine](https://junglewise.ai/threats/technologies/jetengine). Vendors: [Crocoblock](https://junglewise.ai/threats/vendors/crocoblock).

## Quick answers

**Is CVE-2026-39736 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-39736 being exploited in the wild.

**How severe is CVE-2026-39736?** High severity, with a CVSS score of 8.5, published 29 October 2026.

**Which products and versions are affected?** Crocoblock JetEngine through 3.9.0.1.

**Is there a fix for CVE-2026-39736?** Yes: fixed in 3.9.0.2. Until then: Update to version 3.9.0.2 or later immediately. If unable to update, restrict contributor-level permissions to trusted users only.</anigation>
<parameter name="timeline">[{"kind":"disclosed","at":"2026-10-29"}] Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-39736 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-39736?** Check whether you run Crocoblock JetEngine at an affected version. 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.

## How to fix

- Fixed in 3.9.0.2

Update to version 3.9.0.2 or later immediately. If unable to update, restrict contributor-level permissions to trusted users only.</anigation>
<parameter name="timeline">[{"kind":"disclosed","at":"2026-10-29"}]

## Technical details

The JetEngine WordPress plugin contains an improper neutralization of special SQL characters in a database query, allowing SQL injection. The vulnerability requires contributor-level privileges to exploit, and affects versions through 3.9.0.1. An authenticated attacker at contributor level can inject arbitrary SQL commands to extract or modify database contents.

## Affected products

- Crocoblock JetEngine through 3.9.0.1

## References

- [https://crocoblock.com/](https://crocoblock.com/)
- [https://patchstack.com/database/wordpress/plugin/jet-engine/vulnerability/wordpress-jetengine-plugin-3-9-0-1-sql-injection-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/jet-engine/vulnerability/wordpress-jetengine-plugin-3-9-0-1-sql-injection-vulnerability?_s_id=cve)

## Related threats

- [Crocoblock JetEngine stored cross-site scripting](https://junglewise.ai/threats/cve-2026-125785-improper-neutralization-of-input-during-web-page-generation)
- [Crocoblock JetEngine stored cross-site scripting](https://junglewise.ai/threats/cve-2026-123477-improper-neutralization-of-input-during-web-page-generation)
- [Crocoblock JetEngine broken access control](https://junglewise.ai/threats/cve-2026-39735-missing-authorization-vulnerability-in-crocoblock-jetengine-jet)
- [Crocoblock JetEngine SQL injection vulnerability](https://junglewise.ai/threats/cve-2026-115608-improper-neutralization-of-special-elements-used-in-an-sql)
- [Crocoblock JetEngine DOM-based cross-site scripting](https://junglewise.ai/threats/cve-2026-107870-improper-neutralization-of-input-during-web-page-generation)