Traefik is an open-source edge router that makes publishing services a fun and easy experience. Prior to 2.11.54, 3.6.25, and 3.7.10, cross-namespace @kubernetescrd references are not rejected for TraefikService backend references resolved by the service resolver. A tenant confined by RBAC to a single namespace can therefore bind its own router to a TraefikService owned by another namespace and expose or reroute that namespace's backend, defeating the namespace isolation allowCrossNamespace=false is meant to enforce. This issue is fixed in version 2.11.54, 3.6.25, 3.7.10.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-653",
"CWE-863"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71325.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
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}
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"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*",
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{
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},
{
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}
],
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},
{
"cpe": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*",
"range": [
{
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{
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}
],
"source": "CPE_RANGE"
},
{
"range": [
{
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],
"source": "REFERENCES_COMMIT"
},
{
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{
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}
]
}