How do I check whether I am affected by CVE-2026-111402?

- Check the installed plugin version in the WordPress admin under Plugins, or inspect the `newsletters-lite` plugin header version - Treat any installed version at or below `4.18.1` as affected

What is the fix for CVE-2026-111402?

- Update the Newsletters Lite plugin to a version later than `4.18.1`, or remove the plugin if it is not needed - unknown for the exact patched version number

Who is not affected by CVE-2026-111402?

Not affected if: plugin-not-installed, plugin-updated.

Live › vulnerability › CVE-2026-111402

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critical9.3Package

Tribulant Newsletters WordPress plugin: SQL injection through version 4.18.1

The Newsletters Lite plugin by Tribulant Software for WordPress contains an SQL injection flaw that lets input reach the database unescaped. An attacker can read or change site data, and possibly more depending on the database permissions.

Summary written from the sources below. Check the originals before acting.

CVSS 3.x

9.3

critical

scored by [email protected]

known so far3 of 6

missing: versions, primary source, exploitation

First public: Oct 24, 2026 UTC
Last modified: Oct 24, 2026
Status: open
Known exploitation: None reported
Public exploit: None on GitHub
EPSS: not scored

First seen by InfraStack 2026-10-24 08:47 UTC. All times on this page are UTC.

Why it is critical, and not just CVSS

Likelihood → · Impact ↓

critical

high

medium

high

medium

low

medium

low

Exploited: No reports yet.
Needs login: Not known from the sources.
Needs a special setup: Not known from the sources.
Reachable from: internet.
Worst case: Attacker reads or alters site database contents through injected SQL.
CVSS said: 9.3. The facts above say high; we keep the sources' critical until an analyst looks.

Who is affected

Sites running the Newsletters Lite plugin (newsletters-lite) from Tribulant Software on WordPress at version 4.18.1 or earlier. The sources do not say whether authentication is required or which endpoints are reachable, so assume any site with the plugin active is exposed until updated.

Know the next one before it finds you.

Add to Slack

Live › vulnerability › CVE-2026-111402

Go to dashboard

critical9.3Package

Tribulant Newsletters WordPress plugin: SQL injection through version 4.18.1

Summary written from the sources below. Check the originals before acting.

CVSS 3.x

9.3

critical

scored by [email protected]

known so far3 of 6

missing: versions, primary source, exploitation

First public: Oct 24, 2026 UTC
Last modified: Oct 24, 2026
Status: open
Known exploitation: None reported
Public exploit: None on GitHub
EPSS: not scored

First seen by InfraStack 2026-10-24 08:47 UTC. All times on this page are UTC.

Why it is critical, and not just CVSS

Likelihood → · Impact ↓

critical

high

medium

high

medium

low

medium

low

Exploited: No reports yet.
Needs login: Not known from the sources.
Needs a special setup: Not known from the sources.
Reachable from: internet.
Worst case: Attacker reads or alters site database contents through injected SQL.
CVSS said: 9.3. The facts above say high; we keep the sources' critical until an analyst looks.

Who is affected

Know the next one before it finds you.

Add to Slack

Tribulant Newsletters WordPress plugin: SQL injection through version 4.18.1

Why it is critical, and not just CVSS

Who is affected

Know the next one before it finds you.

Tribulant Newsletters WordPress plugin: SQL injection through version 4.18.1

Why it is critical, and not just CVSS

Who is affected

Know the next one before it finds you.

How to check

The fix

Who had it, and when

What the sources say, verbatim

Sources