{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-32303", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-11T21:16:21.659Z", "datePublished": "2026-03-20T17:57:31.884Z", "dateUpdated": "2026-03-20T17:57:31.884Z"}, "containers": {"cna": {"title": "Cryptomator: Tampered vault configuration allows MITM attack on Hub API", "problemTypes": [{"descriptions": [{"cweId": "CWE-346", "lang": "en", "description": "CWE-346: Origin Validation Error", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-354", "lang": "en", "description": "CWE-354: Improper Validation of Integrity Check Value", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-451", "lang": "en", "description": "CWE-451: User Interface (UI) Misrepresentation of Critical Information", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-923", "lang": "en", "description": "CWE-923: Improper Restriction of Communication Channel to Intended Endpoints", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/cryptomator/cryptomator/security/advisories/GHSA-34rf-rwr3-7g43", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/cryptomator/cryptomator/security/advisories/GHSA-34rf-rwr3-7g43"}, {"name": "https://github.com/cryptomator/cryptomator/pull/4179", "tags": ["x_refsource_MISC"], "url": "https://github.com/cryptomator/cryptomator/pull/4179"}, {"name": "https://github.com/cryptomator/cryptomator/commit/6b82abcd80449a30b561d823193f9ecea542a625", "tags": ["x_refsource_MISC"], "url": "https://github.com/cryptomator/cryptomator/commit/6b82abcd80449a30b561d823193f9ecea542a625"}, {"name": "https://github.com/cryptomator/cryptomator/releases/tag/1.19.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/cryptomator/cryptomator/releases/tag/1.19.1"}], "affected": [{"vendor": "cryptomator", "product": "cryptomator", "versions": [{"version": "< 1.19.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-20T17:57:31.884Z"}, "descriptions": [{"lang": "en", "value": "Cryptomator encrypts data being stored on cloud infrastructure. Prior to version 1.19.1, an integrity check vulnerability allows an attacker to 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 1.19.1."}], "source": {"advisory": "GHSA-34rf-rwr3-7g43", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Cryptomator encrypts data being stored on cloud infrastructure. Prior to version 1.19.1, an integrity check vulnerability allows an attacker to 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 1.19.1."}], "id": "CVE-2026-32303", "lastModified": "2026-03-20T18:16:14.593", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-20T18:16:14.593", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/cryptomator/cryptomator/commit/6b82abcd80449a30b561d823193f9ecea542a625"}, {"source": "security-advisories@github.com", "url": "https://github.com/cryptomator/cryptomator/pull/4179"}, {"source": "security-advisories@github.com", "url": "https://github.com/cryptomator/cryptomator/releases/tag/1.19.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/cryptomator/cryptomator/security/advisories/GHSA-34rf-rwr3-7g43"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-346"}, {"lang": "en", "value": "CWE-354"}, {"lang": "en", "value": "CWE-451"}, {"lang": "en", "value": "CWE-923"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}