High
node-compression — security advisory
compression is a Node.js and Express compression middleware. In versions before 1.8.2, when a client aborts the connection while a compressed response is still being sent, the zlib stream created to compress that response is never destroyed, so each aborted compressed response leaks its native zlib memory. A remote unauthenticated attacker can repeatedly open requests and disconnect early, exhausting the available memory and crashing the server. All applications using compression are affected. The issue is fixed in compression 1.8.2, and users should upgrade to 1.8.2 or later.
- Products
- node-compression
- Affected versions
- 1.1.0-1, 1.7.4-2, 1.7.4-3, 1.8.1-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-87776
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:25 UTC · Revision 1
Source evidence
compression is a Node.js and Express compression middleware. In versions before 1.8.2, when a client aborts the connection while a compressed response is still being sent, the zlib stream created to compress that response is never destroyed, so each aborted compressed response leaks its native zlib memory. A remote unauthenticated attacker can repeatedly open requests and disconnect early, exhausting the available memory and crashing the server. All applications using compression are affected. The issue is fixed in compression 1.8.2, and users should upgrade to 1.8.2 or later.
osv:UBUNTU-CVE-2026-87776
node-compression
Fixed versions: Not specified
node-compression
Fixed versions: Not specified
node-compression
Fixed versions: Not specified
node-compression
Fixed versions: Not specified
node-compression
Fixed versions: Not specified
node-compression
Fixed versions: Not specified
node-compression
Fixed versions: Not specified
Complete source record
{
"id": "03e9e87e089da7358161a707591b13f9aae1236dac7dfd9e1a207dad757e8226",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-87776",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-87776",
"summary": "compression is a Node.js and Express compression middleware. In versions before 1.8.2, when a client aborts the connection while a compressed response is still being sent, the zlib stream created to compress that response is never destroyed, so each aborted compressed response leaks its native zlib memory. A remote unauthenticated attacker can repeatedly open requests and disconnect early, exhausting the available memory and crashing the server. All applications using compression are affected. The issue is fixed in compression 1.8.2, and users should upgrade to 1.8.2 or later.",
"evidence": "osv:UBUNTU-CVE-2026-87776",
"products": [
{
"name": {
"value": "node-compression",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.1.0-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "node-compression",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.1.0-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "node-compression",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.7.4-2",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "node-compression",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.7.4-2",
"evidence": "/affected/3/versions"
},
{
"value": "1.7.4-3",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "node-compression",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.7.4-3",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "node-compression",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.7.4-3",
"evidence": "/affected/5/versions"
},
{
"value": "1.8.1-1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "node-compression",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.7.4-3",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-87776",
"aliases": [
"UBUNTU-CVE-2026-87776"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-compression",
"purl": "pkg:deb/ubuntu/node-compression?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"1.1.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87776.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-compression",
"binary_version": "1.1.0-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-compression",
"purl": "pkg:deb/ubuntu/node-compression?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1.1.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87776.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-compression",
"binary_version": "1.1.0-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-compression",
"purl": "pkg:deb/ubuntu/node-compression?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"1.7.4-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87776.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-compression",
"binary_version": "1.7.4-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-compression",
"purl": "pkg:deb/ubuntu/node-compression?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"1.7.4-2",
"1.7.4-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87776.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-compression",
"binary_version": "1.7.4-3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-compression",
"purl": "pkg:deb/ubuntu/node-compression?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"1.7.4-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87776.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-compression",
"binary_version": "1.7.4-3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-compression",
"purl": "pkg:deb/ubuntu/node-compression?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"1.7.4-3",
"1.8.1-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87776.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-compression",
"binary_version": "1.8.1-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-compression",
"purl": "pkg:deb/ubuntu/node-compression?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"1.7.4-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87776.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-compression",
"binary_version": "1.7.4-3"
}
]
}
}
],
"modified": "2026-10-17T13:01:14.919566273Z",
"provider": "osv",
"upstream": [
"CVE-2026-87776"
],
"references": [
"https://ubuntu.com/security/CVE-2026-87776",
"https://www.cve.org/CVERecord?id=CVE-2026-87776",
"https://github.com/expressjs/compression/security/advisories/GHSA-vc2v-76pw-4v95",
"https://cna.openjsf.org/security-advisories.html"
]
},
"related_cves": [
{
"value": "CVE-2026-87776",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361358,
"published_at": "2026-09-11T12:16:00+00:00"
}