CVE-2025-47952
published 2025-05-30CVE-2025-47952: 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…
PriorityP357critical9.1CVSS 3.1
AVNACLPRNUINSUCHIHAN
EPSS
0.78%
51.4th percentile
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.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | traefik_traefik | 0 – 1.7.34 | — |
| github.com | traefik_traefik_v2 | >= 0 < 2.11.25 | 2.11.25 |
| github.com | traefik_traefik_v3 | >= 0 < 3.4.1 | 3.4.1 |
| traefik | traefik | < 3.4.1 | 3.4.1 |
| traefik | traefik | < 2.11.25 | 2.11.25 |
| traefik | traefik | >= 3.0.0 < 3.4.1 | 3.4.1 |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
nvdv4.02.9LOWCVSS: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
ghsa8.8HIGH
osv8.8HIGH
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OSV
Traefik allows path traversal using url encoding in github.com/traefik/traefik
osv·2025-05-29
CVE-2025-47952 Traefik allows path traversal using url encoding in github.com/traefik/traefik
Traefik allows path traversal using url encoding in github.com/traefik/traefik
Traefik allows path traversal using url encoding in github.com/traefik/traefik
OSV
Traefik allows path traversal using url encoding
osv·2025-05-28·CVSS 8.8
CVE-2025-47952 [HIGH] Traefik allows path traversal using url encoding
Traefik allows path traversal using url encoding
## Impact
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.
## Example
```yaml
apiVersion: traefik.io/v1alpha1
kind: IngressRoute
metadata:
name: my-service
spec:
routes:
- match: PathPrefix(‘/service’)
kind: Rule
services:
- name: service-a
port: 8080
middlewares:
- name: my-middleware-a
- match: PathPrefix(‘/service/sub-path’)
kind: Rule
services:
- name: service-a
port: 8080
```
In such a case, the request `http://myd
GHSA
Traefik allows path traversal using url encoding
ghsa·2025-05-28·CVSS 8.8
CVE-2025-47952 [HIGH] CWE-22 Traefik allows path traversal using url encoding
Traefik allows path traversal using url encoding
## Impact
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.
## Example
```yaml
apiVersion: traefik.io/v1alpha1
kind: IngressRoute
metadata:
name: my-service
spec:
routes:
- match: PathPrefix(‘/service’)
kind: Rule
services:
- name: service-a
port: 8080
middlewares:
- name: my-middleware-a
- match: PathPrefix(‘/service/sub-path’)
kind: Rule
services:
- name: service-a
port: 8080
```
In such a case, the request `http://myd
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-05-30
Published