DEBIAN-CVE-2026-46625
JavaScript Cookie is a JavaScript API for handling cookies, client-side. Prior to version 3.0.7, js-cookie's internal assign() helper copies properties with for...in + plain assignment. When the source object is produced by JSON.parse, the JSON object's "__proto__" member is an own enumerable property, so the for…in enumerates it and the target[key] = source[key] write triggers the Object.prototype.__proto__ setter on the fresh target ({}). The result is a per-instance prototype hijack: Object.prototype itself is untouched, but the merged attributes object now inherits attacker-controlled keys. Because the consuming set() function then enumerates the merged object with another for...in, every key the attacker placed on the polluted prototype lands in the resulting Set-Cookie string as an attribute pair. The attacker can set domain=, secure=, samesite=, expires=, and path= on cookies whose attributes the developer thought were locked down. This issue has been patched in version 3.0.7.
DEBIAN-CVE-2026-46625
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-2026-46625
node-js-cookie
Source reference: /affected/0/package/name
- Affected versions
- 3.0.1+~3.0.0-3
Source reference:
/affected/0/versions3.0.7+~3.0.6-1Source reference:
/affected/0/versions3.0.7+~3.0.6-2Source reference:
/affected/0/versions3.0.8+~3.0.6-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
node-js-cookie
Source reference: /affected/1/package/name
- Affected versions
- 3.0.1+~3.0.0-3
Source reference:
/affected/1/versions3.0.7+~3.0.6-1Source reference:
/affected/1/versions3.0.7+~3.0.6-2Source reference:
/affected/1/versions3.0.8+~3.0.6-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
node-js-cookie
Source reference: /affected/2/package/name
- Affected versions
- 3.0.1+~3.0.0-3
Source reference:
/affected/2/versions - Fixed versions
- 3.0.7+~3.0.6-1
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-js-cookie",
"purl": "pkg:deb/debian/node-js-cookie?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.0.1+~3.0.0-3",
"3.0.7+~3.0.6-1",
"3.0.7+~3.0.6-2",
"3.0.8+~3.0.6-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-46625.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-js-cookie",
"purl": "pkg:deb/debian/node-js-cookie?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.0.1+~3.0.0-3",
"3.0.7+~3.0.6-1",
"3.0.7+~3.0.6-2",
"3.0.8+~3.0.6-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-46625.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.7+~3.0.6-1"
}
]
}
],
"package": {
"name": "node-js-cookie",
"purl": "pkg:deb/debian/node-js-cookie?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.0.1+~3.0.0-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-46625.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55898 · Revision 1
- Added to Heist Feed
- Publisher date