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Unrated severityNVD Advisory· Published Jul 23, 2026· Updated Jul 23, 2026

WordPress Mailster plugin <= 4.1.17 - Arbitrary File Upload vulnerability

CVE-2026-27064

Description

Editor Arbitrary File Upload in Mailster <= 4.1.17 versions.

Affected products

1

WordPress/Mailsterllm-fuzzy
Range: <=4.1.17
Package: https://wordpress.org/plugins/mailster

Patches

Vulnerability mechanics

References

1

patchstack.com/database/wordpress/plugin/mailster/vulnerability/wordpress-mailster-plugin-4-1-17-arbitrary-file-upload-vulnerabilitymitrevdb-entry

News mentions

1

Wordfence Intelligence Weekly WordPress Vulnerability Report (July 20, 2026 to July 26, 2026)
Wordfence Blog · Jul 30, 2026