69 results · Feed
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Critical 10.0
Traefik affected by TLS ClientAuth Bypass on HTTP/3
### Summary There is a potential vulnerability in Traefik managing HTTP/3 connections. More details in the [CVE-2025-68121](https://nvd.nist.gov/vuln/detail/CVE-2025-68121). ## Patches - https://github.com/traefik/traefik/releases/tag/v2.11.37 - https://githu…
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High 7.5
Traefik: TCP readTimeout bypass via STARTTLS on Postgres
Traefik is an HTTP reverse proxy and load balancer. Prior to 3.6.8, there is a potential vulnerability in Traefik managing STARTTLS requests. An unauthenticated client can bypass Traefik entrypoint respondingTimeouts.readTimeout by sending the 8-byte Postgres…
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Medium 5.9
Traefik's ACME TLS-ALPN fast path lacks timeouts and close on handshake stall
Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.35 and 3.6.7, there is a potential vulnerability in Traefik ACME TLS certificates' automatic generation: the ACME TLS-ALPN fast path can allow unauthenticated clients to tie up go routines and …
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Medium 5.9
Traefik has Inverted TLS Verification Logic in its ingress-nginx Provider
Traefik is an HTTP reverse proxy and load balancer. Versions 3.5.0 through 3.6.2 have inverted TLS verification logic in the nginx.ingress.kubernetes.io/proxy-ssl-verify annotation. Setting the annotation to "on" (intending to enable backend TLS certificate v…
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Medium 6.9
Traefik doesn't Prevent Path Normalization Bypass in Router + Middleware Rules
Traefik is an HTTP reverse proxy and load balancer. For versions prior to 2.11.32 and 2.11.31 through 3.6.2, requests using PathPrefix, Path or PathRegex matchers can bypass path normalization. When Traefik uses path-based routing, requests containing URL-enc…
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High 7.3
Traefik's Client Plugin is Vulnerable to Path Traversal, Arbitrary File Overwrites and Remote Code Execution
Traefik is an HTTP reverse proxy and load balancer. In versions 2.11.27 and below, 3.0.0 through 3.4.4 and 3.5.0-rc1, a path traversal vulnerability was discovered in WASM Traefik’s plugin installation mechanism. By supplying a maliciously crafted ZIP archive…
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Low 2.9
Traefik allows path traversal using url encoding
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 rout…
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High 8.8
Traefik has a possible vulnerability with the path matchers
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 con…
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Critical 9.1
Traefik affected by Go HTTP Request Smuggling Vulnerability
### Summary net/http: request smuggling through invalid chunked data: The net/http package accepts data in the chunked transfer encoding containing an invalid chunk-size line terminated by a bare LF. When used in conjunction with a server or proxy which incor…
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Medium —
Traefik affected by CVE-2024-53259
There is a potential vulnerability in Traefik managing HTTP/3 connections. More details in the [CVE-2024-53259](https://nvd.nist.gov/vuln/detail/CVE-2024-53259). ## Patches - https://github.com/traefik/traefik/releases/tag/v2.11.15 - https://github.com/traefi…
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Medium 6.3
X-Forwarded-Prefix Header still allows for Open Redirect in traefik
Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. There is a vulnerability in Traefik that allows the client to provide the X-Forwarded-Prefix header from an untrusted source. This issue has been addressed in versions 2.11.14 and 3.2.1.…
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Critical 9.8CVE-2024-45410 Public exploit
HTTP client can remove the X-Forwarded headers in Traefik
Traefik is a golang, Cloud Native Application Proxy. When a HTTP request is processed by Traefik, certain HTTP headers such as X-Forwarded-Host or X-Forwarded-Port are added by Traefik before the request is routed to the application. For a HTTP client, it sho…
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High 7.5
Traefik vulnerable to bypassing IP allow-lists via HTTP/3 early data requests in QUIC 0-RTT handshakes
Traefik is an HTTP reverse proxy and load balancer. Versions prior to 2.11.6, 3.0.4, and 3.1.0-rc3 have a vulnerability that allows bypassing IP allow-lists via HTTP/3 early data requests in QUIC 0-RTT handshakes sent with spoofed IP addresses. Versions 2.11.…
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Medium 5.5
ACME DNS: Azure Identity Libraries Elevation of Privilege Vulnerability
### Impact There is a vulnerability in [Azure Identity Libraries and Microsoft Authentication Library Elevation of Privilege Vulnerability](https://nvd.nist.gov/vuln/detail/CVE-2024-35255). ### References - [CVE-2024-35255](https://nvd.nist.gov/vuln/detail/CV…
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Medium —
Traefik has unexpected behavior with IPv4-mapped IPv6 addresses
### Impact There is a vulnerability in [Go managing various Is methods (IsPrivate, IsLoopback, etc) for IPv4-mapped IPv6 addresses](https://groups.google.com/g/golang-announce/c/XbxouI9gY7k/m/TuoGEhxIEwAJ). They didn't work as expected returning false for add…
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Medium 5.3
Traefik vulnerable to GO issue allowing malformed DNS message to cause infinite loop
### Impact There is a vulnerability in [GO managing malformed DNS message](https://groups.google.com/g/golang-announce/c/wkkO4P9stm0), which impacts Traefik. This vulnerability could be exploited to cause a denial of service. ### References - [CVE-2024-24788]…
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Medium —
Traefik affected by HTTP/2 CONTINUATION flood in net/http
There is a potential vulnerability in Traefik managing HTTP/2 connections. More details in the [CVE-2023-45288](https://www.cve.org/CVERecord?id=CVE-2023-45288). ## Patches - https://github.com/traefik/traefik/releases/tag/v2.11.2 - https://github.com/traefik…
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High 7.5
Possible denial of service vulnerability with Content-length header in Traefik
Traefik is an HTTP reverse proxy and load balancer. In affected versions sending a GET request to any Traefik endpoint with the "Content-length" request header results in an indefinite hang with the default configuration. This vulnerability can be exploited b…
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High 7.5
Uncontrolled Resource Consumption in Traefik
Traefik is an open source HTTP reverse proxy and load balancer. The traefik docker container uses 100% CPU when it serves as its own backend, which is an automatically generated route resulting from the Docker integration in the default configuration. This is…
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Medium 4.8
Incorrect processing of fragment in the URL leads to Authorization Bypass in Traefik
Traefik is an open source HTTP reverse proxy and load balancer. When a request is sent to Traefik with a URL fragment, Traefik automatically URL encodes and forwards the fragment to the backend server. This violates RFC 7230 because in the origin-form the URL…
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Medium 5.9
Denial of service whith ACME HTTPChallenge in Traefik
Traefik is an open source HTTP reverse proxy and load balancer. When Traefik is configured to use the `HTTPChallenge` to generate and renew the Let's Encrypt TLS certificates, the delay authorized to solve the challenge (50 seconds) can be exploited by attack…
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High 8.1
Routes exposed with an empty TLSOption in traefik
Traefik is an open source HTTP reverse proxy and load balancer. In affected versions there is a potential vulnerability in Traefik managing TLS connections. A router configured with a not well-formatted TLSOption is exposed with an empty TLSOption. For instan…
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Low 3.5
Authorization header displayed in the debug logs
Traefik is an open source HTTP reverse proxy and load balancer. Versions prior to 2.9.6 are subject to a potential vulnerability in Traefik displaying the Authorization header in its debug logs. In certain cases, if the log level is set to DEBUG, credentials …
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High 7.4
Traefik skips the router TLS configuration when the host header is an FQDN
Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.6.1, Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be …
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Medium 4.8
Drop Headers via Malicious Connection Header
Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.4.13, there exists a potential header vulnerability in Traefik's handling of the Connection header. Active exploitation of this issue is unlikely, as it requires that a removed header woul…
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Medium 6.1
Open redirect in Traefik
In Traefik before versions 1.7.26, 2.2.8, and 2.3.0-rc3, there exists a potential open redirect vulnerability in Traefik's handling of the "X-Forwarded-Prefix" header. The Traefik API dashboard component doesn't validate that the value of the header "X-Forwar…
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Medium 5.3
Traefik has an Improper Certificate Handling issue
configurationwatcher.go in Traefik 2.x before 2.1.4 and TraefikEE 2.0.0 mishandles the purging of certificate contents from providers before logging.
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High 7.5
Containous Traefik Exposes Password Hashes
types/types.go in Containous Traefik 1.7.x through 1.7.11, when the --api flag is used and the API is publicly reachable and exposed without sufficient access control (which is contrary to the API documentation), allows remote authenticated users to discover …
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High 7.5
Traefik Missing Authentication
Containous Traefik 1.6.x before 1.6.6, when --api is used, exposes the configuration and secret if authentication is missing and the API's port is publicly reachable.