CVE-2026-22698: SM2-PKE has 32-bit Biased Nonce Vulnerability

CVE-2026-22698 · Severity: medium · CVSS 4 · Published 2026-01-09

SM2-PKE has 32-bit Biased Nonce Vulnerability

Technologies: sm2 (crates.io). Vendors: crates.io.

Quick answers

Is CVE-2026-22698 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-22698 being exploited in the wild.
How severe is CVE-2026-22698?
Medium severity, with a CVSS score of 4, published 9 January 2026.
Which products and versions are affected?
sm2 (crates.io) SEMVER:introduced=0.14.0-pre.0,last_affected=0.14.0-rc.4.
Is there a fix for CVE-2026-22698?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-22698?
Check whether you run sm2 (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • sm2 (crates.io) SEMVER:introduced=0.14.0-pre.0,last_affected=0.14.0-rc.4

Identifiers

  • CVE-2026-22698
  • GHSA-w3g8-fp6j-wvqw

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