Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, calling Utility::getAddressWithPort with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the original_src filter and the dns filter. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26310.json",
"cwe_ids": [
"CWE-20"
],
"cna_assigner": "GitHub_M"
}{
"versions": [
{
"introduced": "1.37.0"
},
{
"fixed": "1.37.1"
}
]
}{
"versions": [
{
"introduced": "1.36.0"
},
{
"fixed": "1.36.5"
}
]
}