CVE-2026-22705 json
RustCrypto: Signatures has timing side-channel in ML-DSA decomposition
published 2025-12-12 10 mo ago modified 2026-10-12 27 d ago also GHSA-hcp2-x6j4-29j7 , RUSTSEC-2025-0144 , EUVD-2026-1867
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 5%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- crates.io ml-dsa 0.1.0-rc.3
- github.com/RustCrypto/signatures@035d9ee commit
- github.com/RustCrypto/signatures#1144 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 9 mo ago
Exploit prediction
0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
| OSV | 3.1 | 6.4 | CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 6.4 | CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | ml-dsa | <0.1.0-rc.3 >=0.0.0-0, <0.1.0-rc.3 |
0.1.0-rc.3 |
Affected products
- RustCrypto signatures
Classification
- Weakness
-
- CWE-1240 Use of a Cryptographic Primitive with a Risky Implementation
References
-
github.com
/RustCrypto/signatures/pull/1144
web
-
github.com
/RustCrypto/signatures/commit/035d9eef98486ecd00a8bf418c7817eb14dd6558
web
-
github.com
/RustCrypto/signatures/security/advisories/GHSA-hcp2-x6j4-29j7
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-22705
advisory
-
github.com
/RustCrypto/signatures
package
-
rustsec.org
/advisories/RUSTSEC-2025-0144.html
web, advisory
-
crates.io
/crates/ml-dsa
package
Sources
- CVE List CVE-2026-22705
- GitHub Advisory GHSA-hcp2-x6j4-29j7
- NVD CVE-2026-22705
- OSV RUSTSEC-2025-0144
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