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Vulnerability details

CVE-2026-92553

YayCommerce YaySMTP – WP Mail SMTP with Email Logs

YaySMTP <= 2.7.7 - Authenticated (Subscriber+) Arbitrary File Upload via Attachment Filename Extension

CVSS 3.1
8.8High

Official 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.

CVSS scores

ScoreVersionSourceVector
8.8High 3.1 CVEProject cvelistV5 (CNA) (Wordfence) CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

VendorProductVersionsSource
YayCommerce YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports v ≤ 2.7.7 CVEProject cvelistV5 (CNA)

References and advisories

8
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Details

Published
2026-10-16
Last updated
2026-10-16
State
Published
Assigner (CNA)
Wordfence

Exploit prediction (EPSS)

0.55%
Probability of exploitation in 30 days
46.7%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-434
    Unrestricted Upload of File with Dangerous Type