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CVE-2026-93855— SendPress Newsletters <= 1.26.1.20 - Unauthenticated SQL Injection via 'subscriberid' Parameter

Quick assessment

Affected
brewlabs SendPress Newsletters
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 的 SendPress Newsletters 插件在 1.26.1.20 及之前的所有版本中，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 查询未进行充分的预处理。这使得未经身份验证的攻击者能够向已存在的 SQL 查询中追加额外的 SQL 语句，从而从数据库中窃取敏感信息。此外，用于保护处理程序的 nonce（一次性令牌）使用了硬编码的动作值 ，该值在由 短代码渲染的同一公开页面上显示，因此未经身份验证的访客可轻易获取该 nonce，从而有效绕过

CVSS 7.5 · High
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I. Basic Information for CVE-2026-93855

Vulnerability Information
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Vulnerability Title
SendPress Newsletters <= 1.26.1.20 - Unauthenticated SQL Injection via 'subscriberid' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The SendPress Newsletters plugin for WordPress is vulnerable to time-based SQL Injection via the 'subscriberid' parameter in all versions up to, and including, 1.26.1.20 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The nonce gating the handler uses the hardcoded action value 'sendpress-is-awesome', which is rendered on the same public page served by the [sp-form formid="manage"] shortcode, making it trivially obtainable by unauthenticated visitors and effectively bypassing the nonce as an access control.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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
brewlabs SendPress Newsletters 0 ~ 1.26.1.20 -

II. Public POCs for CVE-2026-93855

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III. Intelligence Information for CVE-2026-93855

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Proof of Concept for CVE-2026-93855 (1)

Vendor Pages for CVE-2026-93855 (1)

IV. Related Vulnerabilities

Same product: SendPress Newsletters
Same vendor: brewlabs
Same weakness: CWE-89