# sjcl (npm) vulnerabilities

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

## At a glance

- Latest release: 1.0.9 (Mar 18, 2026): no advisory affects it
- Newest unaffected release: 1.0.9 (Mar 18, 2026), the latest release
- Weekly downloads: 287.6K
- Dependents: 1,231
- Releases: 9 since 1.0.0 (Sep 10, 2013)
- Registry: https://www.npmjs.com/package/sjcl
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-4258: 1.0.0 to 1.0.8 (1.0.9 is outside it)

## Advisories (1)

### [CVE-2026-4258](https://cve.now/CVE-2026-4258): Versions of the package sjcl before 1.0.9 are vulnerable to Improper Verification of Cryptographic Signature due to missing point-on-curve…

- Severity: High 8.7
- Published: Mar 17, 2026
- Affected: fixed in 1.0.9.
- Fixed in 1.0.9 (released Mar 18, 2026, 1 day after disclosure).
- The latest release, 1.0.9, is not affected.
- 41% of sjcl downloads last week were affected versions (160.1K).

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