# cggmp21 (crates.io) vulnerabilities

2 known vulnerabilities (1 critical, 1 high), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 0.6.3 (Nov 24, 2025): affected by CVE-2025-66017
- Newest unaffected release: Every release is affected by at least one advisory
- Weekly downloads: 732
- Dependents: 0
- Releases: 15 since 0.0.0 (Oct 6, 2022)
- Registry: https://crates.io/crates/cggmp21
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2025-66017: 0.0.0 to 0.6.3 (through the newest release)
- CVE-2025-66016: 0.0.0 to 0.6.2 (0.6.3 is outside it)

## Advisories (2)

### [CVE-2025-66017](https://cve.now/CVE-2025-66017): CGGMP21 presignatures can be used in the way that significantly reduces security

- Severity: High 8.2
- Published: Nov 25, 2025
- Affected: through 0.6.3; all versions.
- No fix released. The latest release, 0.6.3, is still affected.
- 100% of cggmp21 downloads in the last 90 days were affected versions (10.5K).

### [CVE-2025-66016](https://cve.now/CVE-2025-66016): CGGMP24 is missing a check in the ZK proof used in CGGMP21

- Severity: Critical 9.3
- Published: Nov 25, 2025
- Affected: fixed in 0.6.3; fixed in 0.6.3.
- Fixed in 0.6.3 (released Nov 24, 2025, 1 day before disclosure).
- The latest release, 0.6.3, is not affected.
- 7.5% of cggmp21 downloads in the last 90 days were affected versions (788).

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