Is SMTP Mailer safe to use?

Laskyr does not give safety verdicts. No known unpatched vulnerabilities in the latest version (1.1.28). As of 2026-11-04. 1 issue is on record for older versions; version 1.1.25 or newer fixes all of them that state a fix. Keep SMTP Mailer on the latest version (1.1.28) and remove it if you do not use it.

Which versions of SMTP Mailer are vulnerable?

Known issues on record (newest first): Information disclosure (1.1.24 and older, fixed in 1.1.25). The full list with sources is on this page.

What is the latest version of SMTP Mailer?

1.1.28, according to wordpress.org (last updated 2026-09-07). It has 70,000+ active installs.

What should I do if my SMTP Mailer is out of date?

Take a backup, then update it from Dashboard > Updates (or run wp plugin update smtp-mailer). If you cannot update right away, deactivate it until you can. If you think the site was already attacked, run a free scan at https://laskyr.com/scan.

Plugins · smtp-mailer · data as of 2026-11-04

Is SMTP Mailer safe? Known vulnerabilities and latest version

Latest version: 1.1.28
Last updated: 2026-09-07
Active installs: 70,000+
Known issues on record: 1
Unpatched in latest: 0
Tested up to WP: 7.1.4

Configure a SMTP server to send email from your WordPress site. Configure the wp_mail() function to use SMTP instead of the PHP mail() function. — by Noor Alam

What to do

Update to the latest version (1.1.28). Anything older than 1.1.25 has at least one known issue listed below. Dashboard → Updates, or Plugins → “update now”.
If you cannot update right away, deactivate it until you can.
Turn on auto-updates for it: Plugins → “Enable auto-updates” on its row.
If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan.

With WP-CLI: wp plugin get smtp-mailer --field=version shows what you run; wp plugin update smtp-mailer updates it.

Check your version

Known vulnerabilities

1 on record, newest first. “Affected” is the version range the source gives; “fixed in” is the version the source names, or (marked *) the first wordpress.org release after the last affected version.

high 7.5 CVE-2026-32538 · published 2026-03-25

Information disclosure in SMTP Mailer (1.1.24 and older)

Affected: 1.1.24 and older
Fixed in: 1.1.25
Access needed (per CVSS): No login needed
Range from: advisory text · score by Patchstack

Details from the advisory

Insertion of Sensitive Information Into Sent Data vulnerability in Noor Alam SMTP Mailer smtp-mailer allows Retrieve Embedded Sensitive Data.This issue affects SMTP Mailer: from n/a through <= 1.1.24.

NVD CVE-2026-32538 Patchstack advisory

Recent activity

2026-09-07 — latest release on wordpress.org (1.1.28).
2026-03-25 — Information disclosure disclosed (CVE-2026-32538), fixed in 1.1.25.

Free. We check the CVE feeds every day and email you only when a new issue for SMTP Mailer (smtp-mailer) is published or a fix ships. Unsubscribe in one click.

Browse vulnerabilities

Types found in this plugin: Sensitive data exposure (1)

Where this data comes from

Version, last update, installs: wordpress.org/plugins/smtp-mailer (Plugins API), fetched 2026-11-04.
Vulnerabilities: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
Each record links to its CVE page and to the original advisory (Wordfence, Patchstack or WPScan) where there is one. We only list a CVE here when its references or its advisory name this exact plugin, so a few real issues may be missing; none should be about a different plugin. Spot an error? Email Daniel.

Badge for your site or docs (states facts with a date, not a verdict):

<a href="https://laskyr.com/plugins/smtp-mailer"><img src="https://laskyr.com/plugins/smtp-mailer/badge.svg" alt="SMTP Mailer vulnerability status"></a>

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