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CriticalVulnerabilityCVE-2026-111402updated 25 Oct 2026, 17:20 UTC

Newsletters Lite WordPress plugin: database injection flaw

Attackers can send specially crafted input to the newsletter plugin and make it run database commands they wrote. This can expose or change the website's stored data, including subscriber information.

Official, 2 sources
SeverityCriticalCVSS 9.3 of 10
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official, 2 sourcesBacked by an official source

What happened

The Newsletters Lite plugin by Tribulant Software fails to neutralize special characters in input used in SQL queries, which is a SQL injection flaw. The advisory is rated critical with a CVSS score of 9.3.

Why it is dangerous: A successful attacker could read or modify data in the site's database, potentially including subscriber lists and site account data. Any WordPress site running the affected plugin is at risk.

Are you affected?

You are affected if you run the Newsletters Lite (newsletters-lite) plugin by Tribulant Software at version 4.18.1 or earlier.

Newsletters (newsletters-lite) by Tribulant Software: all versions through 4.18.1

What to do

  1. Check whether the Newsletters Lite plugin is installed and what version it is.
  2. Update the plugin to a version newer than 4.18.1 as soon as a fixed release is available from the vendor.
  3. If no fix is available yet, deactivate the plugin until it is patched.
  4. Review the database and subscriber lists for unexpected changes.

Timeline

  1. 24 Oct 2026, 08:16 UTC
    Publicly disclosed
  2. 24 Oct 2026, 08:16 UTC
    Reported by NVD · NVD
  3. 25 Oct 2026, 17:20 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-111402 · GHSA-6623-56rc-mrm6
CVSS
9.3 / 10
EPSS
0.3% chance of exploitation within 30 days
Disclosed
24 Oct 2026, 08:16 UTC
On Zero Radar
before the radar started
Last change
25 Oct 2026, 17:20 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

Newsletters Lite WordPress plugin: database injection flaw · Zero Radar