What is CVE-2026-32317?

CVE-2026-32317 is a high-severity vulnerability in Cryptomator Android, classified under Origin Validation Error. CVSS score: 7.6/10. Published 2026-03-20.

How severe is CVE-2026-32317?

High severity. CVSS v3 base score is 7.6 out of 10.

Vulnerability in Cryptomator Android

CVE-2026-32317

Cryptomator for Android offers multi-platform transparent client-side encryption for files in the cloud. Prior to version 1.12.3, 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 1.12.3.

Published 2026-03-20 · last modified 2026-06-17.

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 (0.4th percentile), scored 2026-10-18.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 0th percentile — 0.4% 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

Weakness classification (CWE)

References

github.com/cryptomator/android/security/advisories/GHSA-876q-q3mm-fcvj (Vendor Advisory)
github.com/cryptomator/android/releases/tag/1.12.3 (Release Notes)

Frequently asked questions

What is CVE-2026-32317?: CVE-2026-32317 is a high-severity vulnerability in Cryptomator Android, classified under Origin Validation Error. CVSS score: 7.6/10. Published 2026-03-20.
How severe is CVE-2026-32317?: High severity. CVSS v3 base score is 7.6 out of 10.