CVE-2026-22705 PUBLISHED

RustCrypto: Signatures has timing side-channel in ML-DSA decomposition

Assigner: GitHub_M
Reserved: 08.01.2026 Published: 10.01.2026 Updated: 12.01.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS Score: 6.4

Attack Vector	Adjacent Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	RustCrypto
Product	signatures
Versions	Version < 0.1.0-rc.2 is affected

References

Problem Types

CWE-1240: Use of a Cryptographic Primitive with a Risky Implementation CWE