# CVE-2026-66630: PublishPress Series SQL Injection in administrator panel

Source: https://junglewise.ai/threats/cve-2026-66630-publishpress-series-sql-injection-in-administrator-panel  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-17. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-66630 · Severity: high · CVSS 7.6 · Published 2026-09-17

PublishPress Series is a WordPress plugin used to organize and manage content series. An administrator-level SQL injection vulnerability allows authenticated admins to read, modify, or delete the entire database including user accounts and sensitive data, potentially compromising the entire WordPress installation.

Technologies: [PublishPress Series](https://junglewise.ai/threats/technologies/series). Vendors: [PublishPress](https://junglewise.ai/threats/vendors/publishpress).

## Quick answers

**Is CVE-2026-66630 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-66630 being exploited in the wild.

**How severe is CVE-2026-66630?** High severity, with a CVSS score of 7.6, published 17 September 2026.

**Which products and versions are affected?** PublishPress Series <=3.1.3.

**Is there a fix for CVE-2026-66630?** A patch was published on 2026-09-17: Version 3.1.4 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-66630 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-66630?** Check whether you run PublishPress Series 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.

## Technical details

PublishPress Series plugin versions 3.1.3 and earlier contain an SQL injection vulnerability in the administrator panel. The flaw is rooted in improper input validation/parameterization of database queries. Attack requires administrator privileges to trigger, limiting the attack surface to authenticated admin users. A successful exploit allows complete database access including reading sensitive data, modifying records, or deleting content. The vulnerability is patched in version 3.1.4 and later.

## Affected products

- PublishPress Series <=3.1.3

## Timeline

- 2026-09-17: disclosed: Published by Patchstack
- 2026-09-17: patched: Version 3.1.4 released

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/organize-series/vulnerability/wordpress-publishpress-series-plugin-3-1-3-sql-injection-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/organize-series/vulnerability/wordpress-publishpress-series-plugin-3-1-3-sql-injection-vulnerability?_s_id=cve)

## Related threats

- [PublishPress Series insecure direct object reference in organize-series](https://junglewise.ai/threats/cve-2026-39444-authorization-bypass-through-user-controlled-key-vulnerability-in)
- [PublishPress Series unauthenticated cross-site request forgery](https://junglewise.ai/threats/cve-2026-74005-publishpress-series-unauthenticated-cross-site-request-forgery)
- [PublishPress Series Cross-Site Scripting (XSS) in plugin](https://junglewise.ai/threats/cve-2026-66617-publishpress-series-cross-site-scripting-xss-in-plugin)