Description
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.
References7
- github.com/rotki/rotki
- github.com/rotki/rotki/blob/v1.44.1/rotkehlchen/crypto.py#L17-L…
- github.com/rotki/rotki/blob/v1.44.1/rotkehlchen/data_handler.py…
- github.com/rotki/rotki/issues/13393
- github.com/rotki/rotki/pull/13401
- github.com/rotki/rotki/releases/tag/v1.44.2
- www.vulncheck.com/advisories/rotki-before-1.44.2-weak-key-deriv…
Metrics
- CVSS 3.1
-
5.9
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 4.0
-
8.2
HIGH
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 10 · as of 8 November 2026
- CWE
- CWE-916
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.