CVE-2026-32303

Summary

Cryptomator encrypts data being stored on cloud infrastructure. Prior to version 1.19.1, an integrity check vulnerability allows an attacker to 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 1.19.1.

Affected Software

VendorProductVersion RangeStatus
cryptomatorcryptomator< 1.19.1affected

Weaknesses

  • CWE-346: CWE-346: Origin Validation Error
  • CWE-354: CWE-354: Improper Validation of Integrity Check Value
  • CWE-451: CWE-451: User Interface (UI) Misrepresentation of Critical Information
  • CWE-923: CWE-923: Improper Restriction of Communication Channel to Intended Endpoints

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References