{
"id": "GHSA-cc37-9q2j-3hfv",
"aliases": [
"CVE-2026-44893"
],
"details": "When decoding a PP2_TYPE_SSL TLV, HAProxyMessage.readNextTLV() first calls `header.retainedSlice(header.readerIndex(), length)` and only then reads the 1-byte client field and 4-byte verify field. If the attacker sets the TLV length below 5, the subsequent readByte/readInt throws IndexOutOfBoundsException. HAProxyMessageDecoder only catches HAProxyProtocolException around this call, so the IOOBE propagates and the retained slice on the pooled cumulation buffer is never released.",
"summary": "Netty: HAProxy SSL TLV parsing leaks retained slice on invalid TLV length",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.2.0.Final"
},
{
"fixed": "4.2.15.Final"
}
]
}
],
"package": {
"name": "io.netty:netty-codec-haproxy",
"ecosystem": "Maven"
},
"database_specific": {
"last_known_affected_version_range": "<= 4.2.14.Final"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1.135.Final"
}
]
}
],
"package": {
"name": "io.netty:netty-codec-haproxy",
"ecosystem": "Maven"
},
"database_specific": {
"last_known_affected_version_range": "<= 4.1.134.Final"
}
}
],
"modified": "2026-06-12T19:29:14Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"published": "2026-06-08T19:02:21Z",
"references": [
{
"url": "https://github.com/netty/netty/security/advisories/GHSA-cc37-9q2j-3hfv",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44893",
"type": "ADVISORY"
},
{
"url": "https://github.com/netty/netty",
"type": "PACKAGE"
},
{
"url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final",
"type": "WEB"
},
{
"url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-703"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2026-06-12T15:16:26Z",
"github_reviewed_at": "2026-06-08T19:02:21Z"
}
}