Security Vulnerabilities
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User while normalization-prone CGI, WSGI, PHP, and NGINX backends collapse both names. A backend can consequently consume the client value instead of the identity Traefik asserted, allowing identity spoofing for any header managed by Traefik. The aliasHeadersStrategy protection is disabled by default and must be configured as delete or reject. The mitigation is available in 2.11.56 and 3.7.12.
CVSS Score
5.3
EPSS Score
0.002
Published
2026-09-10
Dell ThinOS 10, versions prior to 2605_10. 2616, contains an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Command execution.
CVSS Score
9.8
EPSS Score
0.038
Published
2026-09-10
Dell ThinOS 10, versions prior to 2605_10. 2616, contains an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Command execution.
CVSS Score
9.1
EPSS Score
0.023
Published
2026-09-10
Dell ThinOS 10, versions prior to 2605_10.2616, contain a Protection Mechanism Failure vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Arbitrary Code Execution within the application context.
CVSS Score
9.4
EPSS Score
0.004
Published
2026-09-10
Dell ThinOS 10, versions prior to 2605_10.2616, contain an Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability. An unauthenticated attacker with adjacent network access could potentially exploit this vulnerability, leading to Remote Code execution
CVSS Score
9.6
EPSS Score
0.013
Published
2026-09-10
Dell ThinOS 10, versions prior to 2605_10.2616, contain a Missing Support for Integrity Check vulnerability. A high privileged attacker with local access could potentially exploit this vulnerability, leading to arbitrary code execution.
CVSS Score
4.4
EPSS Score
0.001
Published
2026-09-10
Dell ThinOS 10, versions prior to 2605_10.2616, contain a Security Version Number Mutable to Older Versions vulnerability. A low privileged attacker with physical access could potentially exploit this vulnerability, leading to Protection mechanism bypass.
CVSS Score
6.6
EPSS Score
0.002
Published
2026-09-10
Dell ThinOS 10, versions prior to 2605_10.2616, contain a Download of Code Without Integrity Check vulnerability. An unauthenticated attacker with physical access could potentially exploit this vulnerability, leading to arbitrary code execution.
CVSS Score
6.8
EPSS Score
0.001
Published
2026-09-10
Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.0 until 2.11.57 and 3.7.13, the HTTP/3 entrypoint ConnContext does not call service.AddTransportOnContext, so kerberosRoundTripper uses a shared backend transport instead of a transport dedicated to each frontend connection. With HTTP/3 enabled, a backend using connection-bound NTLM or Negotiate authentication, and backend keep-alive, an unrelated client can reuse a backend connection authenticated for a victim, read victim-only data, and act as that victim without the victim credentials. This issue is fixed in 2.11.57 and 3.7.13.
CVSS Score
9.1
EPSS Score
0.004
Published
2026-09-10
Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.26 until 2.11.57 and 3.7.13, Traefik forwards a client-supplied Connection header requesting Upgrade, the Upgrade: h2c token, and HTTP2-Settings to a shared backend. If the backend accepts h2c and returns 101 Switching Protocols, Traefik enters a raw tunnel and no longer applies routers, BasicAuth, ForwardAuth, IPAllowList, RateLimit, access logging, metrics, or tracing to later HTTP/2 requests, allowing an unauthenticated request through an unprotected route to reach protected paths on the same backend. This issue is fixed in 2.11.57 and 3.7.13.
CVSS Score
7.0
EPSS Score
0.004
Published
2026-09-10