> CVE-2026-32318 [HIGH]

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PUBLISHED
2026-03-20 19:16
MODIFIED
2026-03-20 19:16
CVSS_SCORE V3
7.6
EPSS (Prob. Exploit)
0.08%
Top 99.9%
DATA SOURCES:
NVD 🔗 2026-03-20 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-08 OSV 🔗 2026-11-08

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
EXPLOITABILITY
2.3
IMPACT
4.7

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
Required (R)
Nécessite une action utilisateur (clic lien, ouverture fichier, etc.)
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-346 CWE-354 CWE-451 CWE-923

> CWE DETAILED DESCRIPTIONS

CWE-346: Origin Validation Error - The product does not properly verify that the source of data or communication is valid. | CWE-354: Improper Validation of Integrity Check Value - The product does not validate or incorrectly validates the integrity check values or "checksums" of a message. | CWE-451: User Interface (UI) Misrepresentation of Critical Information - The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks. | CWE-923: Improper Restriction of Communication Channel to Intended Endpoints - The product establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Cryptomator for IOS: Tampered vault configuration allows MITM attack on Hub API

AFFECTED PACKAGES:
Unknown / Unknown
57 versions affected
ALIASES:
GHSA-g7fr-c82r-hm6j

> HISTORIQUE DES MODIFICATIONS

Première apparition
20/03/2026 19:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:58
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-346: Origin Validation Error - The product does not properly verify that the source of data or communication is valid. | CWE-354: Improper Validation of Integrity Check Value - The product does no...
Nouvelle valeur:
CWE-346: Origin Validation Error - The product does not properly verify that the source of data or communication is valid. | CWE-354: Improper Validation of Integrity Check Value - The product does no...
📊 ENRICHISSEMENT 01/04/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-346: Origin Validation Error - The product does not properly verify that the source of data or communication is valid. | CWE-354: Improper Validation of Integrity Check Value - The product does no...
Total des modifications: 2 Dernière mise à jour: 1 week ago

> REFERENCES

https://github.com/cryptomator/ios/commit/98c31280304af65c0932eb547d5fe4be2d1692...
https://github.com/cryptomator/ios/pull/444
https://github.com/cryptomator/ios/releases/tag/2.8.3
https://github.com/cryptomator/ios/security/advisories/GHSA-g7fr-c82r-hm6j
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