Paper/Archive/CVE-2026-27064

CVE-2026-27064

EverPress Mailster — WordPress Mailster plugin <= 4.1.17 - Arbitrary File Upload vulnerability

EPSS 0.5%CVSS 9.1

critical.is priorityof 100

36

CVSS 9.1 (CNA)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 42.8.428 × 208.6 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Editor Arbitrary File Upload in Mailster <= 4.1.17 versions.

Affected

ProductAffectedFixed inSource

Mailstern/a – 4.1.17–CNA

Scores by source

Patchstack (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refpatchstack.com/database/wordpress/plugin/mailster/vulnerability/wordpress-mailster-plugin-4-1-17-arbitrary-file-upload-vulnerability?_s_id=cve