CVE-2026-32303

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:cryptomator:cryptomator:*:*:*:*:*:*:*:*

History

17 Jun 2026, 10:35

Type Values Removed Values Added
Summary
  • (es) Cryptomator cifra datos almacenados en infraestructura en la nube. Antes de la versión 1.19.1, una vulnerabilidad de verificación de integridad permite a un atacante manipular el archivo de configuración de la bóveda, lo que lleva a una vulnerabilidad de man-in-the-middle en el mecanismo de carga de claves de Hub. Antes de esta corrección, el cliente confiaba en los puntos finales de la configuración de la bóveda sin verificaciones de autenticidad del host, lo que podría permitir la exfiltración de tokens al mezclar un punto final de autenticación legítimo con un punto final de API malicioso. Los usuarios afectados son aquellos que desbloquean bóvedas respaldadas por Hub con versiones de cliente afectadas en entornos donde un atacante puede alterar el archivo vault.cryptomator. Este problema ha sido parcheado en la versión 1.19.1.

26 Mar 2026, 13:55

Type Values Removed Values Added
References () https://github.com/cryptomator/cryptomator/commit/6b82abcd80449a30b561d823193f9ecea542a625 - () https://github.com/cryptomator/cryptomator/commit/6b82abcd80449a30b561d823193f9ecea542a625 - Patch
References () https://github.com/cryptomator/cryptomator/pull/4179 - () https://github.com/cryptomator/cryptomator/pull/4179 - Issue Tracking
References () https://github.com/cryptomator/cryptomator/releases/tag/1.19.1 - () https://github.com/cryptomator/cryptomator/releases/tag/1.19.1 - Release Notes
References () https://github.com/cryptomator/cryptomator/security/advisories/GHSA-34rf-rwr3-7g43 - () https://github.com/cryptomator/cryptomator/security/advisories/GHSA-34rf-rwr3-7g43 - Vendor Advisory
CPE cpe:2.3:a:cryptomator:cryptomator:*:*:*:*:*:*:*:*
First Time Cryptomator cryptomator
Cryptomator

20 Mar 2026, 18:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-03-20 18:16

Updated : 2026-06-17 10:35


NVD link : CVE-2026-32303

Mitre link : CVE-2026-32303

CVE.ORG link : CVE-2026-32303


JSON object : View

Products Affected

cryptomator

  • cryptomator
CWE
CWE-346

Origin Validation Error

CWE-354

Improper Validation of Integrity Check Value

CWE-451

User Interface (UI) Misrepresentation of Critical Information

CWE-923

Improper Restriction of Communication Channel to Intended Endpoints