CVE-2026-32310

Cryptomator encrypts data being stored on cloud infrastructure. From version 1.6.0 to before version 1.19.1, vault configuration is parsed before its integrity is verified, and the masterkeyfile loader uses the unverified keyId as a filesystem path. The loader resolves keyId.getSchemeSpecificPart() directly against the vault path and immediately calls Files.exists(...). This allows a malicious vault config to supply parent-directory escapes, absolute local paths, or UNC paths (e.g., masterkeyfile://attacker/share/masterkey.cryptomator). On Windows, the UNC variant is especially dangerous because Path.resolve("//attacker/share/...") becomes \\attacker\share\..., so the existence check can trigger outbound SMB access before the user even enters a passphrase. This issue has been patched in version 1.19.1.

CVSS v3 4.1 MEDIUM

4.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/cryptomator/cryptomator/commit/1e3dfe3de1623b1b85d24db91e49d31d1ea11f40	Patch
https://github.com/cryptomator/cryptomator/pull/4180	Issue Tracking
https://github.com/cryptomator/cryptomator/releases/tag/1.19.1	Release Notes
https://github.com/cryptomator/cryptomator/security/advisories/GHSA-5phc-5pfx-hr52	Vendor Advisory Mitigation

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:cryptomator:cryptomator:*:*:*:*:*:*:*:*

cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-20 19:16

Updated : 2026-03-25 20:45

NVD link : CVE-2026-32310

Mitre link : CVE-2026-32310

CVE.ORG link : CVE-2026-32310

JSON object : View

Products Affected

microsoft

windows

cryptomator

cryptomator

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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