DEBIAN-CVE-2026-59880
Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, Immutable.Map and Immutable.Set keep keys that share the same 32-bit hash in a HashCollisionNode collision bucket that is scanned linearly, allowing an attacker who controls keys inserted into a Map, such as through Immutable.Map(obj), Immutable.fromJS(obj), state.merge(userObject), or mergeDeep, to craft many colliding keys and degrade insertion and lookup to consume disproportionate CPU. This issue is fixed in versions 4.3.9 and 5.1.8.
DEBIAN-CVE-2026-59880
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-2026-59880
node-immutable
Source reference: /affected/0/package/name
- Affected versions
- 4.1.0-3
Source reference:
/affected/0/versions4.3.4-1Source reference:
/affected/0/versions4.3.8-1Source reference:
/affected/0/versions4.3.8-2Source reference:
/affected/0/versions4.3.9-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
node-immutable
Source reference: /affected/1/package/name
- Affected versions
- 4.3.4-1
Source reference:
/affected/1/versions4.3.8-1Source reference:
/affected/1/versions4.3.8-2Source reference:
/affected/1/versions4.3.9-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
node-immutable
Source reference: /affected/2/package/name
- Affected versions
- 4.3.4-1
Source reference:
/affected/2/versions4.3.8-1Source reference:
/affected/2/versions4.3.8-2Source reference:
/affected/2/versions - Fixed versions
- 4.3.9-1
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-immutable",
"purl": "pkg:deb/debian/node-immutable?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"4.1.0-3",
"4.3.4-1",
"4.3.8-1",
"4.3.8-2",
"4.3.9-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59880.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-immutable",
"purl": "pkg:deb/debian/node-immutable?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.3.4-1",
"4.3.8-1",
"4.3.8-2",
"4.3.9-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59880.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.3.9-1"
}
]
}
],
"package": {
"name": "node-immutable",
"purl": "pkg:deb/debian/node-immutable?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.3.4-1",
"4.3.8-1",
"4.3.8-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59880.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58045 · Revision 1
- Added to Heist Feed
- Publisher date