CVE-2026-116071

EUVD-2026-109385
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 can run GPU-parallel offline password guessing and decrypt the database containing exchange API keys, secrets, wallet addresses and transaction history.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/rotki/rotki
https://github.com/rotki/rotki/blob/v1.44.1/rotkehlchen/crypto.py#L17-L45
https://github.com/rotki/rotki/blob/v1.44.1/rotkehlchen/data_handler.py#L263-L294
https://github.com/rotki/rotki/issues/13393
https://github.com/rotki/rotki/pull/13401
https://github.com/rotki/rotki/releases/tag/v1.44.2
https://www.vulncheck.com/advisories/rotki-before-1.44.2-weak-key-derivation-for-premium-cloud-backup-encryption