contrid Newsletters Plugin up to 4.17 on WordPress get_users newsletters_mailinglistsroles authorization

Summaryinfo

A vulnerability was found in contrid Newsletters Plugin up to 4.17. It has been declared as problematic. The affected element is the function get_users. The manipulation of the argument newsletters_mailinglistsroles results in authorization. This vulnerability is identified as CVE-2026-75908. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in contrid Newsletters Plugin up to 4.17. It has been classified as problematic. Affected is the function get_users. The manipulation of the argument newsletters_mailinglistsroles with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on integrity. CVE summarizes:

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.

The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-75908 since 08/18/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/25/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• contrid

Name

• Newsletters Plugin

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12
• 4.13
• 4.14
• 4.15
• 4.16
• 4.17

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Threat Intelligenceinfo

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Entryinfo

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