Path traversal in Cryptomator - CVE-2026-32310
Published: April 20, 2026
Vulnerability identifier: #VU126587
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-32310
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: cryptomator
Affected software:
Cryptomator
Cryptomator
Detailed vulnerability description
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to path traversal in the masterkeyfile loader when processing an unverified vault configuration during the unlock flow. A remote user can supply a crafted masterkeyfile key identifier that resolves to a local or UNC path to disclose sensitive information.
User interaction is required to open or unlock a malicious vault, and on Windows a UNC path can trigger outbound SMB access before the passphrase is entered.
How to mitigate CVE-2026-32310
Install security update from vendor's website.