{"id":"CVE-2026-32318","aliases":["EUVD-2026-13762","GHSA-g7fr-c82r-hm6j"],"status":"published","title":"Cryptomator for IOS: Tampered vault configuration allows MITM attack on Hub API","description":"Cryptomator for IOS offers multi-platform transparent client-side encryption for files in the cloud. Prior to version 2.8.3, 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 2.8.3.","severity":{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00079,"percentile":0.00144,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-346","CWE-354","CWE-451","CWE-923"],"published":"2026-03-20T18:27:22Z","modified":"2026-10-28T02:30:36Z","products":[{"vendor":"cisco","product":"ios"},{"vendor":"cryptomator","product":"cryptomator"},{"vendor":"cryptomator","product":"ios"}],"references":[{"url":"https://github.com/cryptomator/ios/security/advisories/GHSA-g7fr-c82r-hm6j","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory"]},{"url":"https://github.com/cryptomator/ios/pull/444","tags":["x_refsource_MISC","Issue Tracking","fix"]},{"url":"https://github.com/cryptomator/ios/commit/98c31280304af65c0932eb547d5fe4be2d16929c","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/cryptomator/ios/releases/tag/2.8.3","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32318.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32318","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-32318","title":"Cryptomator for IOS: Tampered vault configuration allows MITM attack on Hub API","description":"Cryptomator for IOS offers multi-platform transparent client-side encryption for files in the cloud. Prior to version 2.8.3, 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 2.8.3.","status":"published","published":"2026-03-20T18:27:22.41Z","modified":"2026-03-20T19:20:49.867Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-346","CWE-354","CWE-451","CWE-923"],"updated_at":"2026-11-02T14:19:57.47301Z"}],"euvd":[{"id":"EUVD-2026-13762","description":"Cryptomator for IOS offers multi-platform transparent client-side encryption for files in the cloud. Prior to version 2.8.3, 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 2.8.3.","status":"published","published":"2026-03-20T18:27:22Z","modified":"2026-03-20T19:20:49Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","level":"high"}],"updated_at":"2026-11-02T19:25:32.04432Z"}],"nvd":[{"id":"CVE-2026-32318","description":"Cryptomator for IOS offers multi-platform transparent client-side encryption for files in the cloud. Prior to version 2.8.3, 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 2.8.3.","status":"published","published":"2026-03-20T19:16:16.277Z","modified":"2026-06-17T10:35:33.263Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-346","CWE-354","CWE-451","CWE-923"],"updated_at":"2026-11-02T14:12:10.126802Z"}],"osv":[{"id":"CVE-2026-32318","title":"Cryptomator for IOS: Tampered vault configuration allows MITM attack on Hub API","description":"Cryptomator for IOS offers multi-platform transparent client-side encryption for files in the cloud. Prior to version 2.8.3, 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 2.8.3.","status":"published","published":"2026-03-20T18:27:22.41Z","modified":"2026-10-28T02:30:36.75767936Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","level":"high"}],"cwes":["CWE-346","CWE-354","CWE-451","CWE-923"],"updated_at":"2026-11-02T15:45:01.218144Z"}]}}