CVE-2026-32309
Cryptomator: Hub unlocking accepts plaintext HTTP and unvalidated endpoint schemes
Description
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.
INFO
Published Date :
March 20, 2026, 7:16 p.m.
Last Modified :
March 27, 2026, 4:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Cryptomator to version 1.19.1 or newer.
- Ensure vault configurations enforce HTTPS for all traffic.
- Disable HTTP access for sensitive operations.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-32309.
| URL | Resource |
|---|---|
| https://github.com/cryptomator/cryptomator/releases/tag/1.19.1 | Release Notes |
| https://github.com/cryptomator/cryptomator/security/advisories/GHSA-vv33-h7qx-c264 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-32309 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-32309
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-32309 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-32309 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 27, 2026
Action Type Old Value New Value Removed Reference https://github.com/cryptomator/cryptomator/security/advisories/GHSA-vv33-h7qx-c264 Removed Reference Type https://github.com/cryptomator/cryptomator/security/advisories/GHSA-vv33-h7qx-c264 Types: Vendor Advisory -
Initial Analysis by [email protected]
Mar. 25, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CPE Configuration OR *cpe:2.3:a:cryptomator:cryptomator:*:*:*:*:*:*:*:* versions up to (excluding) 1.19.1 Added Reference Type GitHub, Inc.: https://github.com/cryptomator/cryptomator/releases/tag/1.19.1 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/cryptomator/cryptomator/security/advisories/GHSA-vv33-h7qx-c264 Types: Vendor Advisory Added Reference Type CISA-ADP: https://github.com/cryptomator/cryptomator/security/advisories/GHSA-vv33-h7qx-c264 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 25, 2026
Action Type Old Value New Value Added Reference https://github.com/cryptomator/cryptomator/security/advisories/GHSA-vv33-h7qx-c264 -
New CVE Received by [email protected]
Mar. 20, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-319 Added Reference https://github.com/cryptomator/cryptomator/releases/tag/1.19.1 Added Reference https://github.com/cryptomator/cryptomator/security/advisories/GHSA-vv33-h7qx-c264