CVE-2026-32309CWE-319

Cryptomator: Hub unlocking accepts plaintext HTTP and unvalidated endpoint schemes

High · published March 20, 2026

CVSS v4.0
8.7
EPSS
0%
Percentile
19.3
In the wild
Unconfirmed
What it is

Cryptomator encrypts data being stored on cloud infrastructure. Prior to version 1.19.1, the Hub-based unlock flow explicitly supports hub+http and consumes Hub endpoints from vault metadata without enforcing HTTPS. As a result, a vault configuration can drive OAuth and key-loading traffic over plaintext HTTP or other insecure endpoint combinations. An active network attacker can tamper with or observe this traffic. Even when the vault key is encrypted for the device, bearer tokens and endpoint-level trust decisions are still exposed to downgrade and interception. This issue has been patched in version 1.19.1.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.00279 · 19.3th percentile
Weakness
CWE-319 · Cleartext Transmission of Sensitive Information
Published
2026-03-20T18:19Z
EPSS history
Timeline
  • 20 MAR 18:19Z
    Cryptomator: Hub unlocking accepts plaintext HTTP and unvalidated endpoint schemes
    cvelistv5