Medium 6.4Published Jan 10, 2026

CVE-2026-22705RustCrypto: Signatures has timing side-channel in ML-DSA decomposition

Updated under an hour ago (Oct 26, 2026, 10:00 PM ET)

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It affects RustCrypto signatures. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for RustCrypto signatures

Exploited in the last 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.

CVSS: 6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-1240
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jan 12, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

RustCrypto signatures rustcrypto:signatures (from the name)	before 0.1.0-rc.2	CNA record

References

References

https://github.com/RustCrypto/signatures/security/advisories/GHSA-hcp2-x6j4-29j7	x-refsource-confirm
https://github.com/RustCrypto/signatures/pull/1144	x-refsource-misc
https://github.com/RustCrypto/signatures/commit/035d9eef98486ecd00a8bf418c7817eb14dd6558	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.