6.4

CVE-2026-22705: rustcrypto signatures

CVSS: 6.4v3.1MediumDeferred
AliasesGHSA-hcp2-x6j4-29j7RUSTSEC-2025-0144
Published 10-01-2026Last modified 12-01-2026
Open JSON

Vulnerability summary

CVE-2026-22705 is a medium (CVSS 6.4) vulnerability in rustcrypto signatures. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.1% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-01-2026
    PublishedVulnerability first disclosed.
  2. 12-01-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Crates.Io1 product
  • ml-dsa< 0.1.0-rc.3 | ≥ 0.0.0-0, < 0.1.0-rc.3
Rustcrypto1 product

2 vendors · 2 products

References

7 links