CVE-2026-22705— RustCrypto: Signatures has timing side-channel in ML-DSA decomposition
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I. Basic Information for CVE-2026-22705
Vulnerability Information
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Vulnerability Title
RustCrypto: Signatures has timing side-channel in ML-DSA decomposition
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1240
Source: NVD (National Vulnerability Database)
Vulnerability Title
RustCrypto: Signatures 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RustCrypto: Signatures是Rust Crypto开源的一个密码签名算法。 RustCrypto: Signatures 0.1.0-rc.2之前版本存在安全漏洞，该漏洞源于ML-DSA签名期间使用的Decompose算法中存在时序侧信道。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| RustCrypto | signatures | < 0.1.0-rc.2 | - |
II. Public POCs for CVE-2026-22705
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · RustCrypto · 2026-01-10 · 4 CVEs total
| CVE-2026-22699 | 7.5 HIGH | RustCrypto SM2-PKE has Unchecked AffinePoint Decoding (unwrap) in decrypt() |
| CVE-2026-22700 | 7.5 HIGH | RustCrypto Has Insufficient Length Validation in decrypt() in SM2-PKE |
| CVE-2026-22698 | RustCrypto SM2-PKE has 32-bit Biased Nonce Vulnerability |
IV. Related Vulnerabilities
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RustCrypto SM2-PKE has Unchecked AffinePoint Decoding (unwra - CVE-2026-22698
RustCrypto SM2-PKE has 32-bit Biased Nonce Vulnerability
Same weakness: CWE-1240
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V. Comments for CVE-2026-22705
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