CVE-2026-22705: Rustcrypto Signatures

Medium severity, CVSS 6.4. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Rustcrypto Signatures: before 0.1.0-rc.2 (fixed in 0.1.0-rc.2)

Published 2026-01-10. Last modified 2026-06-17.