CVE-2025-9762 CRITICAL

CVE-2025-9762: Post By Email <= 1.0.4b - Unauthenticated Arbitrary File Upload via Email Attachments

Vendor Westi
Product Post By Email
Weakness CWE-78
Published September 30, 2025
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

The Post By Email plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the save_attachments function in all versions up to, and including, 1.0.4b. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Key dates

02Disclosure timeline

September 30, 2025 CVE published
April 8, 2026 Record updated