CVE-2026-32317

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{"affected": [{"affectedData": [{"product": "android", "vendor": "cryptomator", "versions": [{"status": "affected", "version": "< 1.12.3"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:cryptomator:cryptomator:*:*:*:*:*:*:*:*", "matchCriteriaId": "A364B336-F177-4B4B-908C-E5EFEA334800", "versionEndIncluding": "1.12.2", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:google:android:*:*:*:*:*:*:*:*", "matchCriteriaId": "8255F035-04C8-4158-B301-82101711939C", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Cryptomator para Android ofrece cifrado del lado del cliente transparente multiplataforma para archivos en la nube. Antes de la versi\u00f3n 1.12.3, una vulnerabilidad de verificaci\u00f3n de integridad permite a un atacante manipular el archivo de configuraci\u00f3n de la b\u00f3veda, lo que lleva a una vulnerabilidad man-in-the-middle en el mecanismo de carga de claves de Hub. Antes de esta correcci\u00f3n, el cliente confiaba en los puntos finales de la configuraci\u00f3n de la b\u00f3veda sin comprobaciones de autenticidad del host, lo que podr\u00eda permitir la exfiltraci\u00f3n de tokens al mezclar un punto final de autenticaci\u00f3n leg\u00edtimo con un punto final de API malicioso. Los usuarios afectados son aquellos que desbloquean b\u00f3vedas respaldadas por Hub con versiones de cliente afectadas en entornos donde un atacante puede alterar el archivo vault.cryptomator. Este problema ha sido parcheado en la versi\u00f3n 1.12.3."}], "id": "CVE-2026-32317", "lastModified": "2026-06-17T10:35:33.150", "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"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 4.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-32317", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-20T18:55:10.511313Z", "version": "2.0.3"}}]}, "published": "2026-03-20T19:16:16.090", "references": [{"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/cryptomator/android/releases/tag/1.12.3"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/cryptomator/android/security/advisories/GHSA-876q-q3mm-fcvj"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "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": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.12.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "android", "source": "cna", "vendor": "cryptomator"}, "product": "android", "vendor": "cryptomator"}], "analysis": {"en": {"generated_at": "2026-03-26T17:09:10.596907+00:00", "value": {"mitigation_remediation": ["Update Cryptomator Android to version 1.12.3 or later", "Verify that the vault.cryptomator file has not been tampered with and that endpoints correspond to the legitimate service", "Monitor Cryptomator release notes for additional guidance"], "summary": {"action": "Immediate patch", "impact": "Man\u2011in\u2011the\u2011Middle attacker can exfiltrate authentication tokens"}, "threat_synthesis": {"affected_systems": "All Android installations of Cryptomator older than 1.12.3 that are configured to use Hub for vaults are affected. Both the Android OS platform and any cloud provider accessed through the Hub API are impacted as long as the client trusts the modified configuration. The problem is confined to devices running the unpatched client.", "description_and_impact": "The vulnerability resides in the integrity verification of the vault.cryptomator file used by Cryptomator for Android. In versions before 1.12.3 the application accepts the endpoint URLs listed in that file without performing host authenticity checks. An attacker who can alter the file can replace a legitimate Hub API URL with a malicious endpoint. When the client authenticates to the tampered endpoint it transmits the user\u2019s access token, allowing the attacker to exfiltrate the token and later gain unauthorized access to the user\u2019s cloud data.", "risk_and_exploitability": "The CVSS score of 7.6 classifies the flaw as high severity. The EPSS score is below 1\u202f%, and it is not listed as a known exploited vulnerability. Based on the description, it is inferred that the attacker must have the ability to modify the vault.cryptomator file; this requirement implies that local access, a privilege\u2011elevating vulnerability, or another mechanism that grants write permissions would be needed. Once the file is altered, the attacker can perform a man\u2011in\u2011the\u2011middle attack and harvest authentication tokens. The lack of host verification allows the client to communicate with any URL specified in the file, making the vulnerability straightforward once the configuration is compromised."}}}}, "created": "2026-03-23T09:53:01.537553+00:00", "updated": "2026-03-27T09:21:30.920095+00:00", "vendors": ["cryptomator", "cryptomator$PRODUCT$android"]}