SQL Injection in Yaycommerce Yaysmtp – Wp Mail Smtp With Email Logs, Tracking & Reports

CVE-2026-109977

The YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports plugin for WordPress is vulnerable to time-based SQL Injection via the 'params[searchKey]' parameter in all versions up to, and including, 2.7.8 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 administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Vulnerability class: SQL Injection

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (34.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-109977?
CVE-2026-109977 is a medium-severity vulnerability in Yaycommerce Yaysmtp – Wp Mail Smtp With Email Logs, Tracking & Reports, classified under SQL Injection. CVSS score: 4.9/10. Published 2026-11-06.
How severe is CVE-2026-109977?
Medium severity. CVSS v3 base score is 4.9 out of 10.