{"id":"CVE-2026-116071","title":"rotki before 1.44.2 Weak Key Derivation for Premium Cloud Backup Encryption","summary":"rotki before 1.44.2 contains a weak key derivation vulnerability that allows attackers to brute-force backups because the premium sync key is a single unsalted SHA-256 of the user password. Attackers who obtain an uploaded backup blob ca…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cvssSource":"cna","cwe":["CWE-916"],"vendor":"rotki","product":"rotki","affected":["rotki < 1.44.2"],"published":"2026-10-25","updated":"2026-10-25","sourceUpdated":"2026-10-25T11:50:59.252Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116071","references":[{"url":"https://github.com/rotki/rotki/issues/13393","label":"GitHub Issue #13393"},{"url":"https://github.com/rotki/rotki"},{"url":"https://github.com/rotki/rotki/pull/13401"},{"url":"https://github.com/rotki/rotki/blob/v1.44.1/rotkehlchen/crypto.py#L17-L45"},{"url":"https://github.com/rotki/rotki/blob/v1.44.1/rotkehlchen/data_handler.py#L263-L294"},{"url":"https://github.com/rotki/rotki/releases/tag/v1.44.2","label":"v1.44.2 Release Notes"},{"url":"https://www.vulncheck.com/advisories/rotki-before-1.44.2-weak-key-derivation-for-premium-cloud-backup-encryption","label":"VulnCheck Advisory: rotki before 1.44.2 Weak Key Derivation for Premium Cloud Backup Encryption"}],"tags":["cve.org"],"ingestedAt":"2026-10-25T22:08:29.958Z","slug":"CVE-2026-116071","body":"## Overview\n\nrotki before 1.44.2 contains a weak key derivation vulnerability that allows attackers to brute-force backups because the premium sync key is a single unsalted SHA-256 of the user password. Attackers who obtain an uploaded backup blob can run GPU-parallel offline password guessing and decrypt the database containing exchange API keys, secrets, wallet addresses and transaction history.\n\n## Affected\n\n- `rotki < 1.44.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":32,"depthScoreParts":{"impact":32.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}