# source-map-js (npm) vulnerabilities

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

## At a glance

- Latest release: 1.2.2 (Sep 30, 2026): no advisory affects it
- Newest unaffected release: 1.2.2 (Sep 30, 2026), the latest release
- Weekly downloads: 279.5M
- Dependents: 427.3K
- Releases: 9 since 0.6.2 (Feb 7, 2021)
- Registry: https://www.npmjs.com/package/source-map-js
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-93749: 1.0.0 to 1.2.1 (1.2.2 is outside it)

## Advisories (1)

### [CVE-2026-93749](https://cve.now/CVE-2026-93749): source-map-js through 1.2.1 Event Loop Denial of Service

- Severity: High 8.7
- Published: Sep 18, 2026
- Affected: from 1.0.0, fixed in 1.2.2.
- Fixed in 1.2.2 (released Sep 30, 2026, 12 days after disclosure).
- The latest release, 1.2.2, is not affected.
- 47% of source-map-js downloads last week were affected versions (147.1M).

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