CVE-2026-87859

A flaw was found in morgan, an HTTP request logger middleware for Node.js. An unauthenticated remote attacker can exploit this vulnerability by injecting an unescaped double quote into a log field they control, such as the User-Agent or Referer header. This causes the log field to close...

CVE-2026-87859

morgan is an HTTP request logger middleware for Node.js. In versions before 1.12.1, its escapeLogField function does not escape the double quote character, which delimits the quoted fields of the Apache combined log format that morgan emits. An unauthenticated remote attacker who controls a value...

CVE-2026-87859

morgan is an HTTP request logger middleware for Node.js. In versions before 1.12.1 , the escapeLogField() function fails to escape the double quote character, which delimits quoted fields in the Apache combined log format. An unauthenticated remote attacker who controls a value written to a quote...

EUVD-2026-76027

morgan is an HTTP request logger middleware for Node.js. In versions before 1.12.1, its escapeLogField function does not escape the double quote character, which delimits the quoted fields of the Apache combined log format that morgan emits. An unauthenticated remote attacker who controls a value...

CVE-2026-87859 morgan vulnerable to Log Injection via unescaped double quote in quoted log fields

morgan is an HTTP request logger middleware for Node.js. In versions before 1.12.1, its escapeLogField function does not escape the double quote character, which delimits the quoted fields of the Apache combined log format that morgan emits. An unauthenticated remote attacker who controls a value...

CVE-2026-87859

morgan is an HTTP request logger middleware for Node.js. In versions before 1.12.1, its escapeLogField function does not escape the double quote character, which delimits the quoted fields of the Apache combined log format that morgan emits. An unauthenticated remote attacker who controls a value...

Linux Distros Unpatched Vulnerability : CVE-2026-87859

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - morgan is an HTTP request logger middleware for Node.js. In versions before 1.12.1, its escapeLogField function does not escape the double quote character, whic...

PT-2026-89814

morgan is an HTTP request logger middleware for Node.js. In versions before 1.12.1, its escapeLogField function does not escape the double quote character, which delimits the quoted fields of the Apache combined log format that morgan emits. An unauthenticated remote attacker who controls a value...

EUVD-2026-67720

morgan vulnerable to Log Forging via unescaped Unicode line separators...

morgan vulnerable to Log Forging via unescaped Unicode line separators

Impact Morgan writes attacker-controlled request data to the access log through its tokens. The 1.11.0 fix neutralizes C0 control characters, DEL, and backslash, but it does not escape the Unicode line separators U+0085 NEL, U+2028 LINE SEPARATOR, or U+2029 PARAGRAPH SEPARATOR. These code points...

CVE-2026-15603

A flaw was found in morgan, an HTTP request logger middleware for Node.js. An unauthenticated remote client can inject specific Unicode line separator characters into log token values. This manipulation can cause downstream log processing systems to misinterpret a single log entry as multiple...

Linux Distros Unpatched Vulnerability : CVE-2026-15603

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - morgan is an HTTP request logger middleware for Node.js. In versions prior to 1.12.0, the internal helper that escapes log token values did not neutralize the...

20231122-npm (1.0.0), 2048.io (0.0.1) +6571 more potentially affected by CVE-2026-15603 +1 more via morgan (>=1.0.0, <=1.11.0)

morgan NPM version =1.0.0, =1.0.2, =1.0.0, =0.2.0, =0.0.1, =1.0.0, =0.2.0, =0.0.1, =0.0.1-bate.30, =0.0.1, =0.0.67 and more Source cves: CVE-2026-15603, CVE-2026-5078 Source advisory: SNYK:JS-MORGAN-19432128...

Improper Output Neutralization for Logs

Overview morgan is a HTTP request logger middleware for node.js. Affected versions of this package are vulnerable to Improper Output Neutralization for Logs in its format-token expansion, which does not neutralize the Unicode line separators U+0085 NEL, U+2028 LINE SEPARATOR, and U+2029 PARAGRAPH...

Improper Output Neutralization for Logs

Overview org.webjars.npm:morgan is a HTTP request logger middleware for node.js. Affected versions of this package are vulnerable to Improper Output Neutralization for Logs in its format-token expansion, which does not neutralize the Unicode line separators U+0085 NEL, U+2028 LINE SEPARATOR, and...

DEBIAN-CVE-2026-15603

morgan is an HTTP request logger middleware for Node.js. In versions prior to 1.12.0, the internal helper that escapes log token values did not neutralize the Unicode line separator characters U+0085 Next Line, U+2028 Line Separator, and U+2029 Paragraph Separator. An unauthenticated remote clien...

CVE-2026-15603

morgan is an HTTP request logger middleware for Node.js. In versions prior to 1.12.0, the internal helper that escapes log token values did not neutralize the Unicode line separator characters U+0085 Next Line, U+2028 Line Separator, and U+2029 Paragraph Separator. An unauthenticated remote clien...

UBUNTU-CVE-2026-15603

morgan is an HTTP request logger middleware for Node.js. In versions prior to 1.12.0, the internal helper that escapes log token values did not neutralize the Unicode line separator characters U+0085 Next Line, U+2028 Line Separator, and U+2029 Paragraph Separator. An unauthenticated remote clien...

CVE-2026-15603

morgan is an HTTP request logger middleware for Node.js. In versions prior to 1.12.0, the internal helper that escapes log token values did not neutralize the Unicode line separator characters U+0085 Next Line, U+2028 Line Separator, and U+2029 Paragraph Separator. An unauthenticated remote clien...

CVE-2026-15603 morgan vulnerable to Log Forging via unescaped Unicode line separators

morgan is an HTTP request logger middleware for Node.js. In versions prior to 1.12.0, the internal helper that escapes log token values did not neutralize the Unicode line separator characters U+0085 Next Line, U+2028 Line Separator, and U+2029 Paragraph Separator. An unauthenticated remote clien...