CVE-2023-46116: Tutanota (Tuta Mail) is an encrypted email provider

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CRITICAL 9.3UPGRADE

CVE-2023-46116 is a critical-severity flaw (CVSS 9.3) affecting tutanota. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tutanota (Tuta Mail) is an encrypted email provider. Tutanota allows users to open links in emails in external applications. Prior to version 3.118.12, it correctly blocks the `file:` URL scheme, which can be used by malicious actors to gain code execution on a victims computer, however fails to check other harmful schemes such as `ftp:`, `smb:`, etc. which can also be used. Successful exploitation of this vulnerability will enable an attacker to

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-20
Published	2023-12-15
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: tuta

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-12-15 14:15 UTCPublished CVE record published
2026-06-17 06:30 UTCUpdated Record last modified

tuta tutanota UPGRADE

Affected: < 3.118.12

Fixed in: 3.118.12

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls tutanota

2. UPGRADE to 3.118.12

npm install tutanota@">=3.118.12"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-46116?

tutanota: upgrade to 3.118.12. Exact commands for each OS are on this page.

Is CVE-2023-46116 being exploited?

CVE-2023-46116 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-46116 affect?

CVE-2023-46116 affects tutanota. Severity is critical (CVSS 9.3). Tutanota (Tuta Mail) is an encrypted email provider. Tutanota allows users to open links in emails in external applications. Prior to version 3.118.12, it correctly blocks the `file:` URL scheme, which can be used by malicious actors to gai

How urgent is CVE-2023-46116?

Priority 55/100. Critical severity; Public exploit reference

Related CVEs

CVE-2024-23655 HIGH 7.5 UPGRADE Tuta is an encrypted email service
CVE-2024-23330 MEDIUM 5.3 UPGRADE Tuta is an encrypted email service

References

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