lz4-java — security advisory
yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill(), allowing a long sequence of empty blocks in an attacker-controlled compressed stream to exhaust the decoding thread's stack and throw StackOverflowError. The default stopOnEmptyBlock setting is true and is not affected, and the issue does not cause memory corruption. This issue is fixed in version 1.11.4.
- Products
- lz4-java
- Affected versions
- 1.11.2+ds1-1, 1.11.2+ds1-2, 1.11.2+ds1-3, 1.8.0-3, 1.8.0-4
- Fixed versions
- Not specified
- CVEs
- CVE-2026-106449
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 09:02 UTC · Revision 1
Source evidence
yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill(), allowing a long sequence of empty blocks in an attacker-controlled compressed stream to exhaust the decoding thread's stack and throw StackOverflowError. The default stopOnEmptyBlock setting is true and is not affected, and the issue does not cause memory corruption. This issue is fixed in version 1.11.4.
osv:DEBIAN-CVE-2026-106449
lz4-java
Fixed versions: Not specified
lz4-java
Fixed versions: Not specified
lz4-java
Fixed versions: Not specified
Complete source record
{
"id": "b477c7148b3ee78de75fcccb4c738991214a54be75e88acbc18b848f7231157f",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-106449",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-106449",
"summary": "yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill(), allowing a long sequence of empty blocks in an attacker-controlled compressed stream to exhaust the decoding thread's stack and throw StackOverflowError. The default stopOnEmptyBlock setting is true and is not affected, and the issue does not cause memory corruption. This issue is fixed in version 1.11.4.",
"evidence": "osv:DEBIAN-CVE-2026-106449",
"products": [
{
"name": {
"value": "lz4-java",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.11.2+ds1-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.11.2+ds1-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.11.2+ds1-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.0-4",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "lz4-java",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.11.2+ds1-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.11.2+ds1-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.11.2+ds1-3",
"evidence": "/affected/1/versions"
},
{
"value": "1.8.0-4",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "lz4-java",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.11.2+ds1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.11.2+ds1-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.11.2+ds1-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.8.0-4",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "low",
"structured": {
"id": "DEBIAN-CVE-2026-106449",
"aliases": [
"DEBIAN-CVE-2026-106449"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "lz4-java",
"purl": "pkg:deb/debian/lz4-java?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.11.2+ds1-1",
"1.11.2+ds1-2",
"1.11.2+ds1-3",
"1.8.0-3",
"1.8.0-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-106449.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "lz4-java",
"purl": "pkg:deb/debian/lz4-java?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.11.2+ds1-1",
"1.11.2+ds1-2",
"1.11.2+ds1-3",
"1.8.0-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-106449.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "lz4-java",
"purl": "pkg:deb/debian/lz4-java?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.11.2+ds1-1",
"1.11.2+ds1-2",
"1.11.2+ds1-3",
"1.8.0-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-106449.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-08T09:47:32.069578810Z",
"provider": "osv",
"upstream": [
"CVE-2026-106449"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-106449"
]
},
"related_cves": [
{
"value": "CVE-2026-106449",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 98886,
"published_at": "2026-10-06T20:17:26.887+00:00"
}