What’s Vulnerable › Vulnerabilities

CVE-2026-116071: rotki before 1.44.2 Weak Key Derivation for Premium Cloud Backup Encryption

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-25 · updated 2026-10-29
• Weakness: CWE-916

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.

Affected products

• rotki: before 1.44.2 — fixed in 1.44.2

How to fix

Upgrade to a fixed version: rotki 1.44.2. Check the vendor advisory for mitigations.

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

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