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9.6

WordPress Newsletters plugin lets attackers hijack actions

CVE-2026-116863 · published today
Summary

The Newsletters plugin for WordPress (versions up to 4.18.2) can be tricked into performing actions on behalf of a logged‑in user without their consent. An attacker could cause unwanted changes or send messages using the compromised account. Update the plugin to the latest version or remove it if a fix is not available.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
tribulant software newsletters <= 4.18.2
Original advisory text
WordPress Newsletters plugin <= 4.18.2 - Cross Site Request Forgery (CSRF) vulnerability
Cross-Site Request Forgery (CSRF) vulnerability in Tribulant Software Newsletters newsletters-lite allows Cross Site Request Forgery.This issue affects Newsletters: from n/a through 4.18.2.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
9.6 Critical
Type
CWE-352Cross-Site Request Forgery (CSRF)
Timeline
Published27 Oct 2026
Updated27 Oct 2026
First seen27 Oct 2026
Sources
CVE-2026-116863 · NVD
CVE-2026-116863 · MITRE
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