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CVE-2026-32310— Cryptomator: Unverified masterkeyfile key IDs can access arbitrary local or UNC paths

Quick assessment

Affected
cryptomator cryptomator
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cryptomator是Cryptomator社区的一个简单的数字自卫工具。 Cryptomator 1.6.0版本至1.19.1之前版本存在路径遍历漏洞，该漏洞源于在验证完整性前解析保险库配置，可能导致路径遍历攻击。

CVSS 4.1 · Medium EPSS 0.37% · P30
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I. Basic Information for CVE-2026-32310

Vulnerability Information
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Vulnerability Title
Cryptomator: Unverified masterkeyfile key IDs can access arbitrary local or UNC paths
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Cryptomator 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cryptomator是Cryptomator社区的一个简单的数字自卫工具。 Cryptomator 1.6.0版本至1.19.1之前版本存在路径遍历漏洞，该漏洞源于在验证完整性前解析保险库配置，可能导致路径遍历攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
cryptomator cryptomator >= 1.6.0, <= 1.19.0 -

II. Public POCs for CVE-2026-32310

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III. Intelligence Information for CVE-2026-32310

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Patches & Fixes for CVE-2026-32310 (2)

Vendor Advisories for CVE-2026-32310 (1)

Vendor Pages for CVE-2026-32310 (1)

Same Patch Batch · cryptomator · 2026-03-20 · 5 CVEs total

CVE-2026-32303 7.6 HIGH Cryptomator: Tampered vault configuration allows MITM attack on Hub API
CVE-2026-32318 7.6 HIGH Cryptomator for IOS: Tampered vault configuration allows MITM attack on Hub API
CVE-2026-32317 7.6 HIGH Cryptomator for Android: Tampered vault configuration allows MITM attack on Hub API
CVE-2026-32309 Cryptomator: Hub unlocking accepts plaintext HTTP and unvalidated endpoint schemes

IV. Related Vulnerabilities

Same product: cryptomator
Same vendor: cryptomator
Same weakness: CWE-22

V. Comments for CVE-2026-32310

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