# CVE-2026-111402: Tribulant Newsletters SQL injection

Source: https://junglewise.ai/threats/cve-2026-111402-improper-neutralization-of-special-elements-used-in-an-sql  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-24. Updated: 2026-10-24  
License: CC BY 4.0 with a link back

CVE-2026-111402 · Severity: critical · CVSS 9.3 · Published 2026-10-24

Tribulant Newsletters is a WordPress plugin for managing email newsletters and subscriber lists. A SQL injection vulnerability in versions up to 4.18.1 allows attackers to read, modify, or delete the entire website database without authentication, potentially exposing user accounts and private data stored by the site.

Technologies: [Tribulant Software Newsletters](https://junglewise.ai/threats/technologies/tribulant-software-newsletters). Vendors: [Tribulant Software](https://junglewise.ai/threats/vendors/tribulant-software).

## Quick answers

**Is CVE-2026-111402 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-111402 being exploited in the wild.

**How severe is CVE-2026-111402?** Critical severity, with a CVSS score of 9.3, published 24 October 2026.

**Which products and versions are affected?** Tribulant Software Newsletters through 4.18.1.

**Is there a fix for CVE-2026-111402?** Yes: fixed in 4.18.2. Until then: Update the Newsletters plugin to version 4.18.2 or later immediately. If unable to update, request assistance from your hosting provider or web developer, or use Web Application Firewall mitigation rules to block SQL injection attack patterns until the patch can be applied. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-111402 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-111402?** Check whether you run Tribulant Software Newsletters 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 4.18.2

Update the Newsletters plugin to version 4.18.2 or later immediately. If unable to update, request assistance from your hosting provider or web developer, or use Web Application Firewall mitigation rules to block SQL injection attack patterns until the patch can be applied.

## Technical details

A SQL injection flaw in the Newsletters plugin (versions ≤ 4.18.1) fails to properly neutralize special elements in SQL commands, allowing unauthenticated remote attackers to execute arbitrary SQL queries. The vulnerability is exploitable over the network without authentication and carries a CVSS score of 9.3, enabling attackers to fully compromise database confidentiality, integrity, and availability.

## Affected products

- Tribulant Software Newsletters through 4.18.1

## Timeline

- 2026-10-24: disclosed
- 2026-10-22: patched

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-18-1-sql-injection-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-18-1-sql-injection-vulnerability?_s_id=cve)

## Related threats

- [Tribulant Software Newsletters cross-site request forgery](https://junglewise.ai/threats/cve-2026-116863-cross-site-request-forgery-csrf-vulnerability-in-tribulant)
- [Tribulant Newsletters object injection via PHP deserialization](https://junglewise.ai/threats/cve-2026-94075-deserialization-of-untrusted-data-vulnerability-in-tribulant)