5.3

CVE-2026-32310

Cryptomator: Unverified masterkeyfile key IDs can access arbitrary local or UNC paths

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cryptomator ≫ Cryptomator Version >= 1.6.0 <= 1.19.0
   Microsoft ≫ Windows
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.159
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
security-advisories@github.com 4.1 2.3 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

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
https://github.com/cryptomator/cryptomator/pull/4180
Issue Tracking
https://github.com/cryptomator/cryptomator/commit/1e3dfe3de1623b1b85d24db91e49d31d1ea11f40
Patch