# @enspirit/elo (npm) vulnerabilities

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

## At a glance

- Latest release: 1.2.4 (Nov 8, 2026): no advisory affects it
- Newest unaffected release: 1.2.4 (Nov 8, 2026), the latest release
- Weekly downloads: 757
- Dependents: 0
- Releases: 29 since 0.9.0 (Jan 2, 2026)
- Registry: https://www.npmjs.com/package/@enspirit/elo
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-44267: 0.9.0 to 1.0.0 (1.0.1 is outside it)
- CVE-2026-44266: 0.9.0 to 1.0.0 (1.0.1 is outside it)
- CVE-2026-44265: 0.9.0 to 1.0.0 (1.0.1 is outside it)

## Advisories (3)

### [CVE-2026-44267](https://cve.now/CVE-2026-44267): Elo: Sandbox escape to arbitrary Node.js / browser code execution via unfiltered \`.constructor\` member access in Elo JavaScript emitter

- Severity: Critical 9.8
- Published: Nov 3, 2026
- Affected: fixed in 1.0.1.
- Fixed in 1.0.1 (released Apr 20, 2026, 197 days before disclosure).
- The latest release, 1.2.4, is not affected.
- 13% of @enspirit/elo downloads last week were affected versions (321).

### [CVE-2026-44266](https://cve.now/CVE-2026-44266): Elo: Remote Code Execution in Elo Ruby backend via unescaped \`#{...}\` interpolation in emitted string literals and subtype-constraint labels

- Severity: Critical 9.8
- Published: Nov 3, 2026
- Affected: fixed in 1.0.1.
- Fixed in 1.0.1 (released Apr 20, 2026, 197 days before disclosure).
- The latest release, 1.2.4, is not affected.
- 13% of @enspirit/elo downloads last week were affected versions (321).

### [CVE-2026-44265](https://cve.now/CVE-2026-44265): Elo: Code injection in Elo backends via unvalidated emission of programmatic AST fields

- Severity: High 7.4
- Published: Nov 3, 2026
- Affected: fixed in 1.0.1.
- Fixed in 1.0.1 (released Apr 20, 2026, 197 days before disclosure).
- The latest release, 1.2.4, is not affected.
- 13% of @enspirit/elo downloads last week were affected versions (321).

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