UBUNTU-CVE-2026-15603

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Source
https://ubuntu.com/security/CVE-2026-15603
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15603.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-15603
Upstream
Published
2026-08-28T16:17:00Z
Modified
2026-09-02T16:12:05Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:22.04:LTS / node-morgan

Package

Name
node-morgan
Purl
pkg:deb/ubuntu/node-morgan?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.10.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.10.0-2",
            "binary_name": "node-morgan"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15603.json"

Ubuntu:24.04:LTS / node-morgan

Package

Name
node-morgan
Purl
pkg:deb/ubuntu/node-morgan?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.10.0+~1.9.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.10.0+~1.9.3-1",
            "binary_name": "node-morgan"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15603.json"

Ubuntu:26.04:LTS / node-morgan

Package

Name
node-morgan
Purl
pkg:deb/ubuntu/node-morgan?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.10.0+~1.9.3-1
1.10.1+~1.9.10-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.10.1+~1.9.10-1",
            "binary_name": "node-morgan"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15603.json"