The Apache Traffic Server multiplexer plugin overruns its chunk-decode buffer on upstream input, enabling denial of service.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
{
"cwe_ids": [
"CWE-787"
],
"cna_assigner": "apache",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58187.json",
"unresolved_ranges": [
{
"source": "AFFECTED_FIELD",
"extracted_events": [
{
"introduced": "8.0.0"
},
{
"last_affected": "8.1.9"
},
{
"introduced": "9.0.0"
},
{
"last_affected": "9.2.14"
},
{
"introduced": "10.0.0"
},
{
"last_affected": "10.1.3"
}
]
},
{
"source": "DESCRIPTION",
"extracted_events": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.1.9"
},
{
"introduced": "9.0.0"
},
{
"fixed": "9.2.14"
},
{
"introduced": "10.0.0"
},
{
"fixed": "10.1.3"
}
]
}
]
}{
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "8.0.0"
},
{
"last_affected": "8.1.9"
},
{
"introduced": "9.0.0"
},
{
"fixed": "9.2.15"
},
{
"introduced": "10.0.0"
},
{
"fixed": "10.1.4"
}
]
}