CVE-2023-26556

CriticalCVSS 9.1/10Last modified Jun 17, 2026

Description

io.finnet tss-lib before 2.0.0 can leak a secret key via a timing side-channel attack because it relies on the scalar-multiplication implementation in Go crypto/elliptic, which is not constant time (there is an if statement in a loop). One leak is in ecdsa/keygen/round_2.go. (bnb-chain/tss-lib and thorchain/tss are also affected.)

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-203

Affected software

No affected versions have been published.

Timeline

Published: Apr 21, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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