CVE-2026-33472

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Source

https://cve.org/CVERecord?id=CVE-2026-33472

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33472.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-33472

Aliases

GHSA-9q8x-whrw-x44p

Published

2026-04-16T21:12:37.076Z

Modified

2026-07-15T01:49:18.460837781Z

Severity

4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N CVSS Calculator

Summary

Cryptomator Hub OAuth token exchange HTTP downgrade via getAuthority() scheme confusion (CVE-2026-32303 bypass)

Details

Cryptomator is an open-source client-side encryption application for cloud storage. Version 1.19.1 contains a logic flaw in CheckHostTrustController.getAuthority() that allows an attacker to bypass the security fix for CVE-2026-32303. The method hardcodes the URI scheme based on port number, causing HTTPS URLs with port 80 to produce the same authority string as HTTP URLs, which defeats both the consistency check and the HTTP block validation. An attacker with write access to a cloud-synced vault.cryptomator file can craft a Hub configuration where apiBaseUrl and authEndpoint use HTTPS with port 80 to pass auto-trust validation, while tokenEndpoint uses plaintext HTTP. The vault is auto-trusted without user prompt, and a network-positioned attacker can intercept the OAuth token exchange to access the Cryptomator Hub API as the victim. This issue has been fixed in version 1.19.2.

Database specific

{
    "cwe_ids": [
        "CWE-305",
        "CWE-319"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33472.json",
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/cryptomator/cryptomator

Affected ranges

Type

GIT

Repo

https://github.com/cryptomator/cryptomator

Events

Introduced

4be327608a6d478d5d9055121f0ab28fd649b864

Fixed

390bdc33e0a85885da69f4ee32c320ff24e7f560

Database specific

{
    "cpe": "cpe:2.3:a:cryptomator:cryptomator:*:*:*:*:*:*:*:*",
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "1.19.1"
        },
        {
            "fixed": "1.19.2"
        },
        {
            "introduced": "0"
        }
    ]
}

Affected versions

1.*

1.19.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33472.json"