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Software intelligence

Newsletter vulnerabilities

21 tracked advisories · slug newsletter

Important: Newsletter appearing in this catalog does not mean your website is affected. Exposure depends on your installed version. How SiteRespond intelligence works

Tracked advisories

21

Latest advisory

19 August 2026

CISA KEV matches

0

In this WordPress feed

WordPress slug

newsletter

Plugin

What this means for Newsletter

This catalog lists 21 known advisories affecting Newsletter. The most recent was published on 19 August 2026. If you use this software, compare your installed version against the affected ranges on each advisory and update to a fixed release outside those ranges. SiteRespond Defence checks your actual installed version when the plugin is connected — listing here does not by itself mean your site is vulnerable.

Latest issues

  • Newsletter – Send awesome emails from WordPress <= 9.3.3 - Unauthenticated Stored Cross-Site Scripting

    May allow attackers to run scripts in visitors' browsers or hijack admin sessions.

    Published 19 August 2026

  • Newsletter – Send awesome emails from WordPress <= 9.1.0 - Cross-Site Request Forgery to Newsletter Unsubscription

    May trick authenticated users into performing unintended actions.

    Published 19 January 2026

  • Newsletter <= 9.0.9 - Authenticated (Administrator+) SQL Injection

    May allow attackers to read or modify database contents beyond intended access.

    Published 15 December 2025

Vulnerability types

  • Cross-site scripting13
  • CSRF3
  • SQL injection1

Authentication (inferred from titles)

  • Unauthenticated2
  • Authenticated8
  • Unspecified11

Advisory history

Known Newsletter advisories published by month.

All advisories

712 of 21

2 / 2

Check whether your installed version is affected

SiteRespond Defence matches your installed Newsletter version against this catalog when the Defence plugin is connected to your WordPress site.