# morgan (npm) vulnerabilities

4 known vulnerabilities (3 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Weekly downloads: 17.6M
- Dependents: 31.1K
- Registry: https://www.npmjs.com/package/morgan

## Advisories (4)

### [CVE-2026-87859](https://cve.now/CVE-2026-87859): morgan vulnerable to Log Injection via unescaped double quote in quoted log fields

- Severity: Medium 5.3
- Published: Sep 11, 2026
- Affected: fixed in 1.12.1.

### [CVE-2026-15603](https://cve.now/CVE-2026-15603): morgan vulnerable to Log Forging via unescaped Unicode line separators

- Severity: Medium 5.3
- Published: Aug 28, 2026
- Affected: fixed in 1.12.0.

### [CVE-2026-5078](https://cve.now/CVE-2026-5078): morgan vulnerable to Log Forging via unneutralized control characters in :remote-user

- Severity: Medium 5.3
- Published: Jun 3, 2026
- Affected: from 1.2.0, fixed in 1.11.0.

### [CVE-2019-5413](https://cve.now/CVE-2019-5413): An attacker can use the format parameter to inject arbitrary commands in the npm package morgan \< 1.9.1.

- Severity: Unrated
- Published: Mar 17, 2019
- Affected: fixed in 1.9.1.

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