Cryptomator encrypts data being stored on cloud infrastructure. Prior to version 1.19.1, the Hub-based unlock flow explicitly supports hub+http and consumes Hub endpoints from vault metadata without enforcing HTTPS. As a result, a vault configuration can drive OAuth and key-loading traffic over plaintext HTTP or other insecure endpoint combinations. An active network attacker can tamper with or observe this traffic. Even when the vault key is encrypted for the device, bearer tokens and endpoint-level trust decisions are still exposed to downgrade and interception. This issue has been patched in version 1.19.1.

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Fri, 20 Mar 2026 18:30:00 +0000

Type Values Removed Values Added
Description Cryptomator encrypts data being stored on cloud infrastructure. Prior to version 1.19.1, the Hub-based unlock flow explicitly supports hub+http and consumes Hub endpoints from vault metadata without enforcing HTTPS. As a result, a vault configuration can drive OAuth and key-loading traffic over plaintext HTTP or other insecure endpoint combinations. An active network attacker can tamper with or observe this traffic. Even when the vault key is encrypted for the device, bearer tokens and endpoint-level trust decisions are still exposed to downgrade and interception. This issue has been patched in version 1.19.1.
Title Cryptomator: Hub unlocking accepts plaintext HTTP and unvalidated endpoint schemes
Weaknesses CWE-319
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-20T18:19:09.746Z

Reserved: 2026-03-11T21:16:21.659Z

Link: CVE-2026-32309

cve-icon Vulnrichment

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cve-icon NVD

Status : Received

Published: 2026-03-20T19:16:15.733

Modified: 2026-03-20T19:16:15.733

Link: CVE-2026-32309

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses