CVE-2026-75908 Missing authorization in Newsletters
Authenticated authors can bypass authorization checks to send arbitrary newsletters to any user, including administrators, via a manipulated POST parameter.
- 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-2026-75908?
CVE-2026-75908 is a medium-severity missing authorization vulnerability in contrid Newsletters, published on 25 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Newsletters plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.17. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with author-level access and above, to send arbitrary newsletter emails to users of any WordPress role, including administrators, by forging POST fields during a normal post submission. This allows an attacker-supplied role slug via the newsletters_mailinglistsroles POST field to be passed directly to get_users(), enabling unauthorized mass-mailing and potential phishing against privileged site users through the site's own outbound email channel.
Weakness: CWE-862
Which versions are affected by CVE-2026-75908?
How do I fix CVE-2026-75908?
No fix has been published for CVE-2026-75908 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-2026-75908 being exploited?
There is no known exploitation of CVE-2026-75908 in the wild and no public exploit code.
Sources
Also known as GHSA-hh9m-cqf2-rmcf.