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 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.
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/versions1.10.1+~1.9.10-1Source reference:
/affected/0/versions1.12.0+~1.9.10-1Source reference:
/affected/0/versions1.12.1+~1.9.10-1Source 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/versions1.10.1+~1.9.10-1Source reference:
/affected/1/versions1.12.0+~1.9.10-1Source reference:
/affected/1/versions1.12.1+~1.9.10-1Source 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/versions1.10.1+~1.9.10-1Source 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