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DEBIAN-CVE-2026-15603

Type: advisorySource: OSV1 source record

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 client can place these characters in an attacker-controlled log token, for example a Basic auth username surfaced through the remote-user token, so that Unicode-aware downstream log processing splits a single request log into multiple logical records. This is a log forging issue (CWE-117) and an incomplete-fix follow-up to CVE-2026-5078, which only addressed ASCII control characters. The issue is fixed in morgan 1.12.0, which extends the escaping set to cover these Unicode line separators. Upgrade to morgan 1.12.0 to remediate.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-15603

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-15603

node-morgan

Source reference: /affected/0/package/name

Affected versions
1.10.0+~1.9.3-1

Source reference: /affected/0/versions

1.10.1+~1.9.10-1

Source reference: /affected/0/versions

1.12.0+~1.9.10-1

Source reference: /affected/0/versions

1.12.1+~1.9.10-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

node-morgan

Source reference: /affected/1/package/name

Affected versions
1.10.0+~1.9.3-1

Source reference: /affected/1/versions

1.10.1+~1.9.10-1

Source reference: /affected/1/versions

1.12.0+~1.9.10-1

Source reference: /affected/1/versions

1.12.1+~1.9.10-1

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

node-morgan

Source reference: /affected/2/package/name

Affected versions
1.10.0+~1.9.3-1

Source reference: /affected/2/versions

1.10.1+~1.9.10-1

Source reference: /affected/2/versions

Fixed versions
1.12.0+~1.9.10-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "node-morgan",
      "purl": "pkg:deb/debian/node-morgan?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.10.0+~1.9.3-1",
      "1.10.1+~1.9.10-1",
      "1.12.0+~1.9.10-1",
      "1.12.1+~1.9.10-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-15603.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "node-morgan",
      "purl": "pkg:deb/debian/node-morgan?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.10.0+~1.9.3-1",
      "1.10.1+~1.9.10-1",
      "1.12.0+~1.9.10-1",
      "1.12.1+~1.9.10-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-15603.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.12.0+~1.9.10-1"
          }
        ]
      }
    ],
    "package": {
      "name": "node-morgan",
      "purl": "pkg:deb/debian/node-morgan?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.10.0+~1.9.3-1",
      "1.10.1+~1.9.10-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-15603.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56141 · Revision 1
Added to Heist Feed
Publisher date
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