---
id: "CVE-2026-101325"
kind: "vulnerability"
aliases: ["CVE-2026-101325"]
title: "WordPress Newsletters plugin: SQL injection lets subscribers read database contents"
severity: "medium"
cvss: 5.3
epss: 0.00254
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["newsletters", "package", "sql-injection", "wordpress", "wordpress-plugin"]
not_affected_if: ["plugin-not-installed", "plugin-updated-past-4.18.1"]
published_at: "2026-10-31T09:16:32+00:00"
first_seen_at: "2026-10-31T09:34:40+00:00"
updated_at: "2026-10-31T18:03:04+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101325", "first_seen_at": "2026-10-31T09:34:40+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-101325", "first_seen_at": "2026-10-31T18:03:04+00:00"}]
---

# WordPress Newsletters plugin: SQL injection lets subscribers read database contents

The Newsletters plugin for WordPress builds a database query from the 'id' parameter without proper escaping, so time-based SQL injection is possible. An attacker can extract sensitive data from the site's database.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Newsletters plugin version in the WordPress admin plugin list or the plugin's readme.txt
- Look for the Newsletters plugin folder under `wp-content/plugins/`

## Fix

- Newsletters plugin for WordPress: move to a version later than `4.18.1` (the vulnerable range is up to and including `4.18.1`)

## Timeline

- 2026-10-31T09:34:40+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101325
- 2026-10-31T18:03:04+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-101325

## From the sources

The Newsletters plugin for WordPress is vulnerable to time-based SQL Injection via the 'id' parameter in all versions up to, and including, 4.18.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. An attacker can obtain the required nonce and subscriberauth cookie without a WordPress account by simply subscribing through the public newsletter form and opening the management link sent via email; the ownership check verifies only the subscriber_id field and does not validate that the injected id parameter belongs to the authenticated subscriber.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_