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CVE-2026-109977— YaySMTP <= 2.7.8 - Authenticated (Administrator+) SQL Injection via 'params[searchKey]' Parameter

Quick assessment

Affected
yaycommerce YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 插件 "YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports" 在 2.7.8 及之前所有版本中存在基于时间的 SQL 注入漏洞。该漏洞源于对用户提供的 参数未进行充分转义，且现有 SQL 查询缺乏足够的预处理。这使得拥有管理员及以上权限的已认证攻击者能够将额外的 SQL 查询附加到已有的查询中，从而从数据库中提取敏感信息。

CVSS 4.9 · Medium
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I. Basic Information for CVE-2026-109977

Vulnerability Information
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Vulnerability Title
YaySMTP <= 2.7.8 - Authenticated (Administrator+) SQL Injection via 'params[searchKey]' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
yaycommerce YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports 0 ~ 2.7.8 -

II. Public POCs for CVE-2026-109977

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III. Intelligence Information for CVE-2026-109977

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Other References for CVE-2026-109977 (5)

IV. Related Vulnerabilities

Same product: YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports
Same vendor: yaycommerce
Same weakness: CWE-89