CVE-2026-39444 WordPress PublishPress Series plugin <= 3.1.3 - Insecure Direct Object References (IDOR) vulnerability
Attackers can bypass authorization checks to access or modify unauthorized series data in the PublishPress Series plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-39444?
CVE-2026-39444 is a medium-severity missing authorization vulnerability in PublishPress Series, published on 2 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Authorization Bypass Through User-Controlled Key vulnerability in PublishPress PublishPress Series organize-series allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects PublishPress Series: from n/a through 3.1.3.
Weakness: CWE-639
Which versions are affected by CVE-2026-39444?
How do I fix CVE-2026-39444?
No fix has been published for CVE-2026-39444 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-39444 being exploited?
There is no known exploitation of CVE-2026-39444 in the wild and no public exploit code.
Sources
Also known as GHSA-jffr-vg9w-qc68.