Critical severity9.1NVD Advisory· Published Jul 23, 2026· Updated Jul 23, 2026No known patch
CVE-2026-27064
No known patch is available for this vulnerability.
The affected plugin has not been updated on WordPress.org since before this CVE was disclosed; the latest installable version is still vulnerable. If you have the affected software installed, you should uninstall or replace it rather than wait for an update.
CVE-2026-27064
Description
Editor Arbitrary File Upload in Mailster <= 4.1.17 versions.
Affected products
1Patches
Vulnerability mechanics
References
1News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (July 20, 2026 to July 26, 2026)Wordfence Blog · Jul 30, 2026