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CVE-2026-22705

23
FAUCET Score

CVE-2026-22705 is a timing side-channel vulnerability found in the Decompose algorithm within RustCrypto: Signatures, affecting versions prior to 0.1.0-rc.2. This flaw, used during ML-DSA signing to generate signature hints, could allow an attacker to infer sensitive information. Rated 6.4 MEDIUM, it requires low privileges and high attack complexity over an adjacent network to achieve high confidentiality and integrity impacts. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
RustCryptoSignatures
< 0.1.0-rc.2CNA affected

CVSS Data

CVSS version used by this source: 3.1

6.4MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.17%
Probability of exploitation in next 30 days
EPSS Percentile
6.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0017 is in the 10th percentile among its peer group of 74 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

rustpatch availablevia ghsa
Product: ml-dsaFixed in: 0.1.0-rc.2
rustpatch availablevia ghsa
Product: ml-dsaFixed in: 0.1.0-rc.3

Vendor Advisories (1)

rustGHSA-hcp2-x6j4-29j7medium

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

Jan 13, 2026

References

github.com / RustCrypto/signatures/commit/035d9eef98486ecd00a8bf418c7817eb14dd6558
github.com / RustCrypto/signatures/pull/1144
github.com / RustCrypto/signatures/security/advisories/GHSA-hcp2-x6j4-29j7