CVE-2026-22705

MEDIUM6.4

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

Published Jan 10, 2026

Modified 4 days ago

No fix available

Details

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.

References

WEBhttps://github.com/RustCrypto/signatures/commit/035d9eef98486ecd00a8bf418c7817eb14dd6558 WEBhttps://github.com/RustCrypto/signatures/pull/1144 WEBhttps://github.com/RustCrypto/signatures/security/advisories/GHSA-hcp2-x6j4-29j7 ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2026-22705

CVSS Analysis

CVSS v3.1

6.4

Exploitability

Attack Vector

AdjacentAV:A

Attack Complexity

HighAC:H

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

NoneA:N

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

Weakness Type (CWE)

Other

CWE-1240

Ecosystems

Timeline

PublishedJan 10, 2026

ModifiedJan 12, 2026