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CVE-2026-32318— Cryptomator for IOS: Tampered vault configuration allows MITM attack on Hub API

Quick assessment

Affected
cryptomator ios
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cryptomator是Cryptomator社区的一个简单的数字自卫工具。 Cryptomator 2.8.3之前版本存在安全漏洞，该漏洞源于在IOS系统中完整性检查不足，可能导致中间人攻击和令牌泄露。

CVSS 7.6 · High EPSS 0.08% · P0
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I. Basic Information for CVE-2026-32318

Vulnerability Information
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Vulnerability Title
Cryptomator for IOS: Tampered vault configuration allows MITM attack on Hub API
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
源验证错误
Source: CVE Program / CVE List V5
Vulnerability Title
Cryptomator 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cryptomator是Cryptomator社区的一个简单的数字自卫工具。 Cryptomator 2.8.3之前版本存在安全漏洞，该漏洞源于在IOS系统中完整性检查不足，可能导致中间人攻击和令牌泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
cryptomator ios < 2.8.3 -

II. Public POCs for CVE-2026-32318

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III. Intelligence Information for CVE-2026-32318

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Patches & Fixes for CVE-2026-32318 (2)

Vendor Advisories for CVE-2026-32318 (1)

Vendor Pages for CVE-2026-32318 (1)

Same Patch Batch · cryptomator · 2026-03-20 · 5 CVEs total

CVE-2026-32303 7.6 HIGH Cryptomator: Tampered vault configuration allows MITM attack on Hub API
CVE-2026-32317 7.6 HIGH Cryptomator for Android: Tampered vault configuration allows MITM attack on Hub API
CVE-2026-32310 4.1 MEDIUM Cryptomator: Unverified masterkeyfile key IDs can access arbitrary local or UNC paths
CVE-2026-32309 Cryptomator: Hub unlocking accepts plaintext HTTP and unvalidated endpoint schemes

IV. Related Vulnerabilities

Same product: ios
Same vendor: cryptomator
Same weakness: CWE-346

V. Comments for CVE-2026-32318

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