CVE-2026-75908 json
Newsletters <= 4.17 - Missing Authorization to Authenticated (Author+) Arbitrary Modification via 'newsletters_mailinglistsroles' POST Parameter
published 2026-08-25 2 mo ago modified 2026-09-28 41 d ago also EUVD-2026-65464
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 32%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- contrid Newsletters
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/1d3eddce-1b41-4a33-8d57-bd594cf06a06?source=cve
- plugins.trac.wordpress.org /browser/newsletters-lite/tags/4.17/wp-mailinglist.php#L3957
- plugins.trac.wordpress.org /browser/newsletters-lite/tags/4.17/wp-mailinglist.php#L4114
- plugins.trac.wordpress.org /browser/newsletters-lite/tags/4.17/wp-mailinglist.php#L3897
- plugins.trac.wordpress.org /browser/newsletters-lite/tags/4.17/includes/checkinit.php#L63
- plugins.trac.wordpress.org /changeset?reponame=&old=3663788%40newsletters-lite&new=3663788%40newsletters-lite
Sources
- CVE List CVE-2026-75908
- NVD CVE-2026-75908
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.