Vulnerability in Apple Iphone OS
CVE-2026-32318
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.001 (1.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000
Affected products
- Apple Iphone OS
- Cryptomator
- Cryptomator iOS — versions < 2.8.3
Weakness classification (CWE)
References
- github.com/cryptomator/ios/security/advisories/GHSA-g7fr-c82r-hm6j (Vendor Advisory)
- github.com/cryptomator/ios/pull/444 (Issue Tracking)
- github.com/cryptomator/ios/commit/98c31280304af65c0932eb547d5fe4be2d16929c (Patch)
- github.com/cryptomator/ios/releases/tag/2.8.3 (Release Notes)
Frequently asked questions
- What is CVE-2026-32318?
- CVE-2026-32318 is a high-severity vulnerability in Apple Iphone OS, classified under Origin Validation Error. CVSS score: 7.6/10. Published 2026-03-20.
- How severe is CVE-2026-32318?
- High severity. CVSS v3 base score is 7.6 out of 10.