CVE-2025-65318

CRITICAL

Canary Mail <5.1.40 - Info Disclosure

Title source: llm

Description

When using the attachment interaction functionality, Canary Mail 5.1.40 and below saves documents to a file system without a Mark-of-the-Web tag, which allows attackers to bypass the built-in file protection mechanisms of both Windows OS and third-party software.

Exploits (1)

nomisec WORKING POC 7 stars

by bbaboha · poc

https://github.com/bbaboha/CVE-2025-65318-and-CVE-2025-65319

View Code ZIP pw:eip

References (5)

[Broken Link] http://canary.com

[Broken Link] http://canarymail.com

[Exploit] https://drive.google.com/file/d/14wrTzvcLPfFsWmy-SAtDwwZKKPssBsx5/view

[Exploit, Third Party Advisory] https://github.com/bbaboha/CVE-2025-65318-and-CVE-2025-65319

[Not Applicable] https://github.com/nickvourd/RTI-Toolkit

Scores

CVSS v3 9.1

EPSS 0.0011

EPSS Percentile 29.1%

Attack Vector NETWORK

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

Classification

CWE

CWE-693

Status published

Affected Products (1)

canarymail/canary_mail < 5.1.40

Timeline

Published Dec 16, 2025

Tracked Since Feb 18, 2026