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CVE-2026-92553

8.8 · HIGH

The YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.7.7 via the putFile function.

Published Oct 16, 2026CWE-434EPSS 0.56%

Overview

CVE-2026-92553 is a high-severity vulnerability. It was published on October 16, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

The YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.7.7 via the putFile function. This is due to insufficient file type validation in the putFile function, as sanitize_file_name() does not strip executable extensions and no allow-list, MIME check, or safe-extension rename is applied. This makes it possible for authenticated attackers, with subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. The only server-side guard is a .htaccess file containing 'Require all denied' written by writeGuards(), which is silently ignored by nginx and by Apache configured with AllowOverride None, meaning RCE is fully achievable on those server configurations.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/Helper/EmailLogAttachments.php#L106Refplugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/Helper/EmailLogAttachments.php#L178Refplugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/Helper/EmailLogAttachments.php#L542Refplugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/Helper/EmailLogAttachments.php#L549Refplugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/Helper/Utils.php#L814Refplugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/PluginCore.php#L37Refplugins.trac.wordpress.org/changeset/3739875/yaysmtp/trunk/includes/Helper/EmailLogAttachments.phpRefwww.wordfence.com/threat-intel/vulnerabilities/id/4abbf148-4648-440c-8a82-cf68bf051fbe?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-92553?

CVE-2026-92553 is a high-severity vulnerability. It was published on October 16, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-92553?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-92553?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-92553?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-92553 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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