CVE-2026-33472

MEDIUM EPSS 1.3%

Published Apr 16, 20262mo ago · Modified Jun 17, 20261w ago

4.8 CVSS 3.1

Medium

Published Apr 16, 2026 2mo ago

Last Modified Jun 17, 2026 1w ago

Description

Cryptomator is an open-source client-side encryption application for cloud storage. Version 1.19.1 contains a logic flaw in CheckHostTrustController.getAuthority() that allows an attacker to bypass the security fix for CVE-2026-32303. The method hardcodes the URI scheme based on port number, causing HTTPS URLs with port 80 to produce the same authority string as HTTP URLs, which defeats both the consistency check and the HTTP block validation. An attacker with write access to a cloud-synced vault.cryptomator file can craft a Hub configuration where apiBaseUrl and authEndpoint use HTTPS with port 80 to pass auto-trust validation, while tokenEndpoint uses plaintext HTTP. The vault is auto-trusted without user prompt, and a network-positioned attacker can intercept the OAuth token exchange to access the Cryptomator Hub API as the victim. This issue has been fixed in version 1.19.2.

CVSS Details

Base Score

4.8

Exploitability

1.2

Impact

3.6

Vector string

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

Attack Vector Network

Attack Complexity High

Privileges Required Low

User Interaction Required

Scope Unchanged

Confidentiality High

Integrity None

Availability None

Threat Intelligence

EPSS Exploit Probability

1.3% percentile

Exploit & Patch Status

Public Exploit Known

Patch Available

Weaknesses 2

CWE-305

CWE-319

Affected Products 1

Vendor	Product	Version	Range
cryptomator	cryptomator	*	<1.19.2

References 3

github.com https://github.com/cryptomator/cryptomator/pull/4179

Issue TrackingPatch
github.com https://github.com/cryptomator/cryptomator/releases/tag/1.19.2

ProductRelease Notes
github.com https://github.com/cryptomator/cryptomator/security/advisories/GHSA-9q8x-whrw-x44p

ExploitVendor Advisory

Remediation

github.com https://github.com/cryptomator/cryptomator/pull/4179

Issue TrackingPatch