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PatchSiren cyber security CVE debrief

CVE-2026-57739 AcyMailing Newsletter Team CVE debrief

A critical SQL injection vulnerability was discovered in the AcyMailing SMTP Newsletter plugin. This issue, tracked as CVE-2026-57739, allows for blind SQL injection and has a CVSS score of 9.3. The vulnerability affects the plugin from its inception up to and including version 10.11.0. The vulnerability is caused by improper neutralization of special elements used in an SQL command, which can lead to unauthorized access and data breaches. Users should be aware of this vulnerability and take necessary actions to secure their installations.

Vendor
AcyMailing Newsletter Team
Product
AcyMailing SMTP Newsletter
CVSS
CRITICAL 9.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-13
Original CVE updated
2026-07-13
Advisory published
2026-07-13
Advisory updated
2026-07-13

Who should care

Users of AcyMailing SMTP Newsletter plugin, especially those using versions up to 10.11.0, should be aware of this vulnerability and take necessary actions to secure their installations. This includes administrators, security teams, and operators who manage the plugin and its associated systems. They should review the official advisory, assess their exposure, and implement necessary mitigations to prevent exploitation.

Technical summary

The AcyMailing SMTP Newsletter plugin is vulnerable to SQL injection due to improper neutralization of special elements used in an SQL command. This vulnerability has been rated as critical with a CVSS score of 9.3. The issue allows for blind SQL injection, which can lead to unauthorized access and data breaches. The vulnerability affects the plugin from its inception up to and including version 10.11.0. To prevent such attacks, it is essential to update the plugin to a version beyond 10.11.0 and implement additional security measures.

Defensive priority

High

Recommended defensive actions

  • Update AcyMailing SMTP Newsletter plugin to a version beyond 10.11.0.
  • Implement web application firewalls (WAF) to detect and prevent SQL injection attacks.
  • Regularly monitor and audit database activities for suspicious queries.
  • Restrict access to the plugin's configuration and database.
  • Use prepared statements with parameterized queries to prevent SQL injection.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record was published on 2026-07-13T10:16:40.223Z and has not been modified since then. The NVD entry is currently in the 'Received' status. Limited information is available about the specific details of the vulnerability and its impact. The source item URL provides additional information about the vulnerability, but the details are limited. Defenders should verify the affected scope and severity with the vendor and review the official advisory for mitigation guidance.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-13T10:16:40.223Z and has not been modified since then. The NVD entry is currently in the 'Received' status.