# halo2\_gadgets (crates.io) vulnerabilities

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

## At a glance

- Latest release: 0.6.0 (Sep 29, 2026): no advisory affects it
- Newest unaffected release: 0.6.0 (Sep 29, 2026), the latest release
- Weekly downloads: 25.2K
- Dependents: 0
- Releases: 11 since 0.0.0 (Oct 21, 2021)
- Registry: https://crates.io/crates/halo2_gadgets
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-54496: 0.0.0 to 0.4.0 (0.5.0 is outside it)

## Advisories (1)

### [CVE-2026-54496](https://cve.now/CVE-2026-54496): Missing copy constraint in halo2\_gadgets variable-base scalar multiplication allows under-constrained base, breaking Orchard Action…

- Severity: Critical 9.3
- Published: Jul 17, 2026
- Affected: fixed in 0.5.0.
- Fixed in 0.5.0 (released Jun 3, 2026, 44 days before disclosure).
- The latest release, 0.6.0, is not affected.
- 20% of halo2_gadgets downloads in the last 90 days were affected versions (69.7K).

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