CVE-2025-65318
Critical
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.
SeverityCritical
CVSS9.1
Exploit probability—
ProductCanarymail Canary Mail
PublishedDec 16, 2025
First seenDec 16, 2025
Weakness typeCWE-693CWE-693
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| canarymail canary_mail | v ≤ 5.1.40 | — |
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