CVE-2026-116071 (CVSS 5.9)

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.

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CVSS v3.1 Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0020

Probability of exploitation

0.10%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-916 CWE-916

References

Other 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

Frequently Asked Questions

What is CVE-2026-116071? +

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. It has a CVSS v3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2026-116071? +

CVE-2026-116071 has a CVSS v3.1 score of 5.9 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0020, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-116071? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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