# mcp-sanitizer (npm) vulnerabilities

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

## At a glance

- Latest release: 1.4.3 (Nov 7, 2026): no advisory affects it
- Newest unaffected release: 1.4.3 (Nov 7, 2026), the latest release
- Weekly downloads: 843
- Dependents: 0
- Releases: 11 since 1.0.0 (Aug 5, 2025)
- Registry: https://www.npmjs.com/package/mcp-sanitizer
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- GHSA-4MFG-R38W-W8FG: 1.0.0 to 1.3.3 (1.4.0 is outside it)
- GHSA-7W82-6F9J-V9JP: 1.0.0 to 1.3.3 (1.4.0 is outside it)

## Advisories (2)

### [GHSA-4MFG-R38W-W8FG](https://cve.now/GHSA-4MFG-R38W-W8FG): mcp-sanitizer: URL sanitizer allows localhost/IPv6 loopback SSRF bypass via explicit port or bracketed IPv6

- Severity: High
- Published: Oct 28, 2026
- Affected: fixed in 1.4.0.
- Fixed in 1.4.0 (released Jun 25, 2026, 125 days before disclosure).
- The latest release, 1.4.3, is not affected.
- 33% of mcp-sanitizer downloads last week were affected versions (316).

### [GHSA-7W82-6F9J-V9JP](https://cve.now/GHSA-7W82-6F9J-V9JP): mcp-sanitizer: File Path Sanitizer Permits Arbitrary User-Home Absolute Paths

- Severity: High
- Published: Oct 28, 2026
- Affected: fixed in 1.4.0.
- Fixed in 1.4.0 (released Jun 25, 2026, 125 days before disclosure).
- The latest release, 1.4.3, is not affected.
- 33% of mcp-sanitizer downloads last week were affected versions (316).

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