Insufficient verification of data authenticity in Cryptomator - #VU126584
Published: March 7, 2025 / Updated: April 20, 2026
Vulnerability identifier: #VU126584
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-345
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: cryptomator
Affected software:
Cryptomator
Cryptomator
Detailed vulnerability description
The vulnerability allows a local user to modify protected data.
The vulnerability exists due to insufficient data authenticity verification in the encrypted vault format when processing ciphertext files with write access to the vault. A local user can exchange the ciphertext contents of one file with those of another to modify protected data.
The issue stems from file contents not being cryptographically bound to their file paths.
Remediation
Install security update from vendor's website.