Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. In versions prior to 2.11.24, 3.3.6, and 3.4.0-rc2. There is a potential vulnerability in Traefik managing the requests using a PathPrefix, Path or PathRegex matcher. When Traefik is configured to route the requests to a backend using a matcher based on the path, if the URL contains a /../ in its path, it’s possible to target a backend, exposed using another router, by-passing the middlewares chain. This issue has been patched in versions 2.11.24, 3.3.6, and 3.4.0-rc2. A workaround involves adding a PathRegexp rule to the matcher to prevent matching a route with a /../ in the path.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-22"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/32xxx/CVE-2025-32431.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.11.24"
}
],
"source": "CPE_RANGE"
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{
"cpe": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*",
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{
"introduced": "3.0.0"
},
{
"fixed": "3.3.6"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:traefik:traefik:3.4.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "3.4.0-NA"
},
{
"last_affected": "3.4.0-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:traefik:traefik:3.4.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "3.4.0-rc1"
},
{
"last_affected": "3.4.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"original_tag": "v2.11.24",
"range": [
{
"fixed": "8816cb86a4425dfa90adf01312a6b6e4d73e2792"
}
],
"source": "REFERENCES_TAG"
},
{
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"range": [
{
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}
],
"source": "REFERENCES_TAG"
},
{
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"range": [
{
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}
],
"source": "REFERENCES_TAG"
}
]
}