{"id":"CVE-2025-47952","aliases":["EUVD-2025-16447","GHSA-vrch-868g-9jx5","GO-2025-3719","openSUSE-SU-2025:15188-1","openSUSE-SU-2025:15304-1","openSUSE-SU-2025:15305-1"],"status":"published","title":"Traefik allows path traversal using url encoding","description":"Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. Prior to versions 2.11.25 and 3.4.1, 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 URL encoded string 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 2.11.25 and 3.4.1.","severity":{"version":"4.0","score":2.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00983,"percentile":0.62565,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2025-05-28T14:25:09Z","modified":"2026-10-28T02:31:10Z","fixes":[{"ecosystem":"Go","package":"github.com/traefik/traefik/v3","fixed_in":["3.4.1"],"sources":["ghsa","osv"]},{"ecosystem":"Go","package":"github.com/traefik/traefik/v2","fixed_in":["2.11.25"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/traefik/traefik/v3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.4.0"},{"fixed":"3.4.1"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/traefik/traefik","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.7.34"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/traefik/traefik/v2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.25"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/traefik/traefik/v3","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.4.1"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/traefik/traefik/v2","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.25"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/traefik/traefik","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.7.34"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/traefik/traefik","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/traefik/traefik/v2","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.25"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/traefik/traefik/v3","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.4.1"}]}]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"govulncheck-vulndb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.0.20250529T205903-1.1"}]}],"bundled":3},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"traefik","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.3-1.1"}]}],"bundled":7},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"traefik2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.26-1.1"}]}],"bundled":9}],"products":[{"vendor":"traefik","product":"traefik"}],"references":[{"url":"https://github.com/traefik/traefik/security/advisories/GHSA-vrch-868g-9jx5","tags":["x_refsource_CONFIRM","Patch","Vendor Advisory","advisory","web"]},{"url":"https://github.com/traefik/traefik/commit/08d5dfee0164aa54dd44a467870042e18e8d3f00","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://github.com/traefik/traefik/releases/tag/v2.11.25","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://github.com/traefik/traefik/releases/tag/v3.4.1","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47952","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-vrch-868g-9jx5"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47952.json","tags":["advisory"]},{"url":"https://github.com/traefik/traefik","tags":["package"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/5W5NDYFJCKVTB2UYZO6OSRFA7RGWGHY3/","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2025-4057","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-47933","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-47952","tags":["web"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2024-4533","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-45338","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-22868","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-22869","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-22872","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-27144","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-28180","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-22871","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-32431","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2025-47952","title":"Traefik allows path traversal using url encoding","description":"Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. Prior to versions 2.11.25 and 3.4.1, 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 URL encoded string 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 2.11.25 and 3.4.1.","status":"published","published":"2025-05-30T03:37:12.685Z","modified":"2025-05-30T12:44:38.661Z","cvss":[{"version":"4.0","score":2.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P","level":"low","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:32:26.320248Z"}],"euvd":[{"id":"EUVD-2025-16447","description":"Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. Prior to versions 2.11.25 and 3.4.1, 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 URL encoded string 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 2.11.25 and 3.4.1.","status":"published","published":"2025-05-30T03:37:12Z","modified":"2025-05-30T12:44:38Z","cvss":[{"version":"4.0","score":2.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P","level":"low"}],"updated_at":"2026-11-02T20:32:34.937389Z"}],"ghsa":[{"id":"GHSA-vrch-868g-9jx5","title":"Traefik allows path traversal using url encoding","description":"## Impact\n\nThere is a potential vulnerability in Traefik managing the requests using a `PathPrefix`, `Path` or `PathRegex` matcher.\n\nWhen Traefik is configured to route the requests to a backend using a matcher based on the path, if the URL contains a URL encoded string in its path, it’s possible to target a backend, exposed using another router, by-passing the middlewares chain.\n\n## Example\n\n```yaml\napiVersion: traefik.io/v1alpha1\nkind: IngressRoute\nmetadata:\n  name: my-service\nspec:\n  routes:\n    - match: PathPrefix(‘/service’)\n      kind: Rule\n      services:\n        - name: service-a\n          port: 8080\n      middlewares:\n        - name: my-middleware-a\n    - match: PathPrefix(‘/service/sub-path’)\n      kind: Rule\n      services:\n        - name: service-a\n          port: 8080\n```\n\nIn such a case, the request `http://mydomain.example.com/service/sub-path/%2e%2e/other-path` will reach the backend `my-service-a` without operating the middleware `my-middleware-a` unless the computed path is `http://mydomain.example.com/service/other-path` and should be computes by the first router (operating `my-middleware-a`).\n\n## Patches\n\n- https://github.com/traefik/traefik/releases/tag/v2.11.25\n- https://github.com/traefik/traefik/releases/tag/v3.4.1\n\n## For more information\n\nIf you have any questions or comments about this advisory, please [open an issue](https://github.com/traefik/traefik/issues).\n\n\u003cdetails\u003e\n\u003csummary\u003eOriginal Description\u003c/summary\u003e\n### Summary\n\nPath traversal with \"/../\" using URL encodings (\"/%2e%2e\") allows for circumventing routing rules. \n\n### Details\n\nWhen having defined a route, you can path traverse using the URL encoded variant of /../ and reach endpoints that are not made publicly available. This issue has been found and fixed earlier with regular /../ and has been fixed in this CVE. This URL encoding trick works around that\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-32431\n\nSimply implementing a check on the URL encoding won't be sufficient as path traversal can take numerous formats. See examples here:\nhttps://book.hacktricks.wiki/en/pentesting-web/file-inclusion/index.html\n\n### PoC\n\nSetup a service with two endpoints: \"/public\" and \"/private\", which returns a 200 OK for both\nSetup a Traefik proxy with a single route which points to the service using path /public\n\nRegular requests to traefik /public will return 200 OK and to /private should return 404 (response by Traefik)\nWhen making a request to /public/%2e%2e/private you should receive a 200 OK.\n\n### Impact\nImpacts all traefik implementations with path prefix routes that expose only part of the downstream api\n\n### Suggestion\nProvide configuration property which disables all path traversals. Steps:\n1. Decode URL\n2. Evaluate and construct relative path (do traversal before route evaluation)\n3. Compare relative/evaluated path to configured routes (PathPrefix/pathRegexp)\n\u003c/details\u003e","status":"published","published":"2025-05-28T14:25:09Z","modified":"2025-11-27T08:04:35Z","cvss":[{"version":"4.0","score":2.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P","level":"low"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:39:10.178331Z"}],"nvd":[{"id":"CVE-2025-47952","description":"Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. Prior to versions 2.11.25 and 3.4.1, 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 URL encoded string 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 2.11.25 and 3.4.1.","status":"published","published":"2025-05-30T04:15:46.9Z","modified":"2026-06-17T09:28:53.547Z","cvss":[{"version":"4.0","score":2.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"primary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:11:10.143444Z"}],"osv":[{"id":"CVE-2025-47952","title":"Traefik allows path traversal using url encoding","description":"Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. Prior to versions 2.11.25 and 3.4.1, 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 URL encoded string 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 2.11.25 and 3.4.1.","status":"published","published":"2025-05-30T03:37:12.685Z","modified":"2026-10-28T02:31:10.042234566Z","cvss":[{"version":"4.0","score":2.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P","level":"low"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:44:50.037003Z"},{"id":"GHSA-vrch-868g-9jx5","title":"Traefik allows path traversal using url encoding","description":"## Impact\n\nThere is a potential vulnerability in Traefik managing the requests using a `PathPrefix`, `Path` or `PathRegex` matcher.\n\nWhen Traefik is configured to route the requests to a backend using a matcher based on the path, if the URL contains a URL encoded string in its path, it’s possible to target a backend, exposed using another router, by-passing the middlewares chain.\n\n## Example\n\n```yaml\napiVersion: traefik.io/v1alpha1\nkind: IngressRoute\nmetadata:\n  name: my-service\nspec:\n  routes:\n    - match: PathPrefix(‘/service’)\n      kind: Rule\n      services:\n        - name: service-a\n          port: 8080\n      middlewares:\n        - name: my-middleware-a\n    - match: PathPrefix(‘/service/sub-path’)\n      kind: Rule\n      services:\n        - name: service-a\n          port: 8080\n```\n\nIn such a case, the request `http://mydomain.example.com/service/sub-path/%2e%2e/other-path` will reach the backend `my-service-a` without operating the middleware `my-middleware-a` unless the computed path is `http://mydomain.example.com/service/other-path` and should be computes by the first router (operating `my-middleware-a`).\n\n## Patches\n\n- https://github.com/traefik/traefik/releases/tag/v2.11.25\n- https://github.com/traefik/traefik/releases/tag/v3.4.1\n\n## For more information\n\nIf you have any questions or comments about this advisory, please [open an issue](https://github.com/traefik/traefik/issues).\n\n\u003cdetails\u003e\n\u003csummary\u003eOriginal Description\u003c/summary\u003e\n### Summary\n\nPath traversal with \"/../\" using URL encodings (\"/%2e%2e\") allows for circumventing routing rules. \n\n### Details\n\nWhen having defined a route, you can path traverse using the URL encoded variant of /../ and reach endpoints that are not made publicly available. This issue has been found and fixed earlier with regular /../ and has been fixed in this CVE. This URL encoding trick works around that\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-32431\n\nSimply implementing a check on the URL encoding won't be sufficient as path traversal can take numerous formats. See examples here:\nhttps://book.hacktricks.wiki/en/pentesting-web/file-inclusion/index.html\n\n### PoC\n\nSetup a service with two endpoints: \"/public\" and \"/private\", which returns a 200 OK for both\nSetup a Traefik proxy with a single route which points to the service using path /public\n\nRegular requests to traefik /public will return 200 OK and to /private should return 404 (response by Traefik)\nWhen making a request to /public/%2e%2e/private you should receive a 200 OK.\n\n### Impact\nImpacts all traefik implementations with path prefix routes that expose only part of the downstream api\n\n### Suggestion\nProvide configuration property which disables all path traversals. Steps:\n1. Decode URL\n2. Evaluate and construct relative path (do traversal before route evaluation)\n3. Compare relative/evaluated path to configured routes (PathPrefix/pathRegexp)\n\u003c/details\u003e","status":"published","published":"2025-05-28T14:25:09Z","modified":"2025-11-27T08:59:46.377512Z","cvss":[{"version":"4.0","score":2.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P","level":"low"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:46:57.694388Z"},{"id":"GO-2025-3719","title":"Traefik allows path traversal using url encoding in github.com/traefik/traefik","description":"Traefik allows path traversal using url encoding in github.com/traefik/traefik","status":"published","published":"2025-05-29T20:59:03Z","modified":"2026-03-03T04:56:38.338929Z","updated_at":"2026-11-02T15:47:01.728182Z"},{"id":"openSUSE-SU-2025:15188-1","title":"govulncheck-vulndb-0.0.20250529T205903-1.1 on GA media","description":"These are all security issues fixed in the govulncheck-vulndb-0.0.20250529T205903-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-06-01T00:00:00Z","modified":"2026-03-23T04:53:27.905721Z","updated_at":"2026-11-02T16:58:37.399567Z"},{"id":"openSUSE-SU-2025:15304-1","title":"traefik-3.4.3-1.1 on GA media","description":"These are all security issues fixed in the traefik-3.4.3-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-07-03T00:00:00Z","modified":"2026-03-23T04:53:37.190213Z","updated_at":"2026-11-02T16:58:37.810934Z"},{"id":"openSUSE-SU-2025:15305-1","title":"traefik2-2.11.26-1.1 on GA media","description":"These are all security issues fixed in the traefik2-2.11.26-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-07-03T00:00:00Z","modified":"2026-03-23T04:53:37.600926Z","updated_at":"2026-11-02T16:58:37.810934Z"}]}}