cvedb.io
CVE-2023-26556
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2023-04-21T18:15:07.927 · Last modified 2026-06-17T05:43:35.320

Summary

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.)

Affected products

iofinnet — tss-lib

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.