CVE-2026-57741 AcyMailing Newsletter Team CVE debrief

Who should care

Users of AcyMailing SMTP Newsletter plugin for WordPress should prioritize updating to a patched version to prevent potential XSS attacks. Affected operators, platforms, vulnerability-management, and security teams should review the vulnerability details and plan for updates or mitigations.

Technical summary

The vulnerability is caused by improper neutralization of input during web page generation, allowing for Stored XSS attacks. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. Affected product context indicates that AcyMailing SMTP Newsletter plugin for WordPress is vulnerable. Defensive impact includes potential XSS attacks, and source-grounded technical framing highlights the need for updates.

Defensive priority

High priority should be given to updating AcyMailing SMTP Newsletter to a version beyond 10.11.0.

Recommended defensive actions

• Update AcyMailing SMTP Newsletter to a patched version
• Monitor for suspicious activity
• Implement additional security measures to prevent XSS attacks
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

Evidence is limited; verification of vulnerability details is recommended. The CVE record was published on 2026-07-13T10:16:40.457Z and has not been modified since then. Affected product deployments should be confirmed to exist in managed environments, and an owner should be assigned for follow-up. The official advisory or CVE record should be reviewed to validate affected scope, severity, and vendor guidance.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.