Vulnerability · Published Jan 10, 2026 · Assigned by GitHub_M
CVE-2026-22705RustCrypto: Signatures has timing side-channel in ML-DSA decomposition
Medium 6.4
In plain English
A medium-severity security flaw in signatures from RustCrypto. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Severity (CVSS 3.1)6.4Medium
Exploit odds (30 days)0.2%top 94.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| RustCrypto | signatures | < 0.1.0-rc.2 |
Weakness: CWE-1240 · Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N