Medium (6.4). EPSS 0.2% chance of exploitation in the next 30 days. Fixed in ml-dsa 0.1.0-rc.3.
RustCrypto: Signatures offers support for digital signatures, which provide authentication of data using public-key cryptography. Prior to version 0.1.0-rc.2, a timing side-channel was discovered in the Decompose algorithm which is used during ML-DSA signing to generate hints for the signature. This issue has been patched in version 0.1.0-rc.2.
Severity
CVSS 3.1
6.4 medium
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS
0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-31)