# CVE-2026-101325: Newsletters <= 4.18.1 - Authenticated (Subscriber+) SQL Injection via 'id' Parameter

Status: published. Published: 2026-10-31. Updated: 2026-11-02.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- contrid / Newsletters: ≥ 0; ≤ 4.18.1 (affected, semver). Source: CNA: Wordfence

## Severity and prioritization

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N; source: CNA: Wordfence

- CISA KEV: No listing in collected sources

- EPSS: 0.25% as of 2026-11-02; percentile 17.06%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-89

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/d4bc05a2-25f9-4276-8541-a77efc7bd617?source=cve (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.18.1/models/subscriber.php#L1294 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.18.1/wp-mailinglist-plugin.php#L5076 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.18.1/includes/checkinit.php#L269 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.18.1/wp-mailinglist-plugin.php#L5008 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/changeset/3756587/newsletters-lite/trunk/wp-mailinglist-plugin.php (CNA: Wordfence)

## Provenance

- CNA: Wordfence: https://www.cve.org/CVERecord?id=CVE-2026-101325; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-101325; retrieved 2026-11-02; source updated Not reported

Revision: 2d291be7363eb85a0dceb8803d177755da658fe016b1c2c564fd55dd71a80435

Canonical: https://y2.dev/cve/CVE-2026-101325

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