morgan-1.10.1.tgz: 1 vulnerabilities (highest severity is: 5.3)

[mend-for-github-com]

Vulnerable Library - morgan-1.10.1.tgz

HTTP request logger middleware for node.js

Library home page: https://registry.npmjs.org/morgan/-/morgan-1.10.1.tgz

Path to dependency file: /package.json

Path to vulnerable library: /package.json

Vulnerabilities

Vulnerability	Severity	CVSS	Dependency	Type	Fixed in (morgan version)	Remediation Possible**
CVE-2026-5078	Medium	5.3	morgan-1.10.1.tgz	Direct	1.11.0	✅

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2026-5078

Vulnerable Library - morgan-1.10.1.tgz

HTTP request logger middleware for node.js

Library home page: https://registry.npmjs.org/morgan/-/morgan-1.10.1.tgz

Path to dependency file: /package.json

Path to vulnerable library: /package.json

Dependency Hierarchy:

• ❌ morgan-1.10.1.tgz (Vulnerable Library)

Found in base branch: main

Vulnerability Details

Impact: The morgan logging middleware's :remote-user token extracts the Basic auth username from the Authorization request header and writes it to the log stream without neutralizing control characters. An unauthenticated attacker can send a crafted Authorization Basic header containing CR or LF bytes to inject forged log lines, breaking the one-request-per-line structure of access logs and enabling log forgery against downstream log consumers. The built-in combined, common, default, and short formats are affected, as well as any custom format that references :remote-user. Affected versions: morgan 1.2.0 through 1.10.1. Patches: upgrade to morgan 1.11.0, which neutralizes control characters in the :remote-user token output. Workarounds: use a custom format string that does not include :remote-user.

Publish Date: 2026-06-03

URL: CVE-2026-5078

CVSS 3 Score Details (5.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-4vj7-5mj6-jm8m

Release Date: 2026-06-03

Fix Resolution: 1.11.0

⛑️ Automatic Remediation will be attempted for this issue.

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⛑️Automatic Remediation will be attempted for this issue.