CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
Lifecycle Timeline
6DescriptionNVD
Cryptomator for IOS offers multi-platform transparent client-side encryption for files in the cloud. Prior to version 2.8.3, an integrity check vulnerability allows an attacker tamper with the vault configuration file leading to a man-in-the-middle vulnerability in Hub key loading mechanism. Before this fix, the client trusted endpoints from the vault config without host authenticity checks, which could allow token exfiltration by mixing a legitimate auth endpoint with a malicious API endpoint. Impacted are users unlocking Hub-backed vaults with affected client versions in environments where an attacker can alter the vault.cryptomator file. This issue has been patched in version 2.8.3.
AnalysisAI
A man-in-the-middle vulnerability in Cryptomator for iOS versions prior to 2.8.3 allows attackers who can modify the vault.cryptomator configuration file to intercept authentication tokens by substituting malicious API endpoints while maintaining legitimate authentication endpoints. This affects users unlocking Hub-backed vaults in environments where attackers have write access to vault configuration files. …
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RemediationAI
Within 24 hours: Identify all iOS devices running Cryptomator versions prior to 2.8.3 within your organization. Within 7 days: Deploy Cryptomator for iOS version 2.8.3 or later to all affected devices via MDM or direct user notification. …
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External POC / Exploit Code
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EUVD-2026-13762