{
"id": "GHSA-hf6x-8p5f-cgmf",
"aliases": [
"CVE-2026-54399"
],
"details": "Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows a remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length",
"summary": "Apache HttpComponents Core HTTP/1 header parsing can cause memory-exhaustion denial of service",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.4.3"
}
]
}
],
"package": {
"name": "org.apache.httpcomponents.core5:httpcore5",
"ecosystem": "Maven"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.5-alpha1"
},
{
"fixed": "5.5-beta2"
}
]
}
],
"package": {
"name": "org.apache.httpcomponents.core5:httpcore5",
"ecosystem": "Maven"
}
}
],
"modified": "2026-08-12T19:24:45Z",
"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": "2026-07-01T18:31:55Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54399",
"type": "ADVISORY"
},
{
"url": "https://github.com/apache/httpcomponents-core/commit/d96a00fec9b2e19f8005e35681df5f6cd6e21a9e",
"type": "WEB"
},
{
"url": "https://github.com/apache/httpcomponents-core/commit/fdc53a32fe0fccf098cc67e71cd125e447c759ed",
"type": "WEB"
},
{
"url": "https://github.com/apache/httpcomponents-core",
"type": "PACKAGE"
},
{
"url": "https://lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpy",
"type": "WEB"
},
{
"url": "http://www.openwall.com/lists/oss-security/2026/07/01/4",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2026-07-01T17:16:36Z",
"github_reviewed_at": "2026-08-12T19:24:45Z"
}
}