CVE-2026-38728

CVE-2026-38728 is a high vulnerability published on May 15, 2026. An issue in Nodemailer smtpserver before v.3.18.3 allows a remote attacker to cause a denial of service via the SMTPStream.write, lib/smtp-stream.js components

CVE-2026-38728 was first published in the National Vulnerability Database on May 15, 2026, with the most recent update on May 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

CVE-2026-38728 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

CVE-2026-38728 has a CVSS v3 base score of 7.5 (NVD).

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-38728, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.