Traefik 2.11.x before 2.11.58 and 3.x before 3.7.14 contains a race condition in NTLM and Kerberos (Negotiate) backend authentication, where the per-connection sticky round tripper slot is read and written without synchronization. Remote attackers can send concurrent HTTP/2 or HTTP/3 requests over one connection to orphan backend connections, break connection-bound authentication, or crash Traefik.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-362"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114641.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "2.11.0"
},
{
"fixed": "2.11.58"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.7.14"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}