CVE-2025-65318

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.

CVSS v3.1 Score

9.1

CRITICAL

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

Weakness Type (CWE)

CWE-693 CWE-693

Affected Products

Vendor	Product	Versions
canarymail	canary_mail	< 5.1.40

References

Exploits

https://drive.google.com/file/d/14wrTzvcLPfFsWmy-SAtDwwZKKPssBsx5/view https://github.com/bbaboha/CVE-2025-65318-and-CVE-2025-65319 https://github.com/bbaboha/CVE-2025-65318-and-CVE-2025-65319

Other References

http://canary.com http://canarymail.com https://github.com/nickvourd/RTI-Toolkit

Frequently Asked Questions

What is CVE-2025-65318? +

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. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2025-65318? +

CVE-2025-65318 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-65318? +

CVE-2025-65318 affects products from canarymail, specifically: canary_mail. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-65318? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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