Unauthenticated SQL injection in SendPress Newsletters plugin
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- SQL injection
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-89.
Summary
The SendPress Newsletters plugin for WordPress is affected in all versions up to and including 1.26.1.20. Insufficient escaping of the subscriberid parameter and a query built without prepared statements make the SQL query injectable (CWE-89). An unauthenticated attacker can append SQL queries to existing queries to extract sensitive information from the database. The hardcoded nonce action, shown on a public page, does not stop unauthenticated visitors.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for SendPress Newsletters.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-29 Threatist record created from CVE-2026-93855
- 2026-10-29 Alias added: GHSA-j32g-r42g-5gh6
- 2026-10-29 CISA SSVC decision points changed
- 2026-10-29 Priority changed: MEDIUM → LOW
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6b562f31-6a57-4719-a0e1-6a92affef844?source=cve
- https://plugins.trac.wordpress.org/browser/sendpress/tags/1.26.1.20/classes/class-sendpress-data.php#L1300
- https://plugins.trac.wordpress.org/browser/sendpress/tags/1.26.1.20/classes/sc/class-sendpress-sc-forms.php#L580
More brewlabs vulnerabilities
- TI-2026-67988 SQL injection in WordPress SendPress Newsletters plugin CVSS 3.1CRITICAL 9.3
- TI-2025-31457 WordPress SensorPress plugin <= 1.0 - Cross Site Scripting (XSS) vulnerability CVSS 3.1CRITICAL 9.8
- TI-2025-26281 WordPress WP Email Delivery plugin <= 1.20.11.23 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
Sources
- CVE-2026-93855 · CVE Program
- CVE-2026-93855 · NVD
- FIRST EPSS
- GHSA-j32g-r42g-5gh6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences