CVE-2026-26998— Traefik 安全漏洞

Traefik: unbounded io.ReadAll on auth server response body causes OOM denial of service(DOS)

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.38 and 3.6.9, there is a potential vulnerability in Traefik managing the ForwardAuth middleware responses. When Traefik is configured to use the ForwardAuth middleware, the response body from the authentication server is read entirely into memory without any size limit. There is no maxResponseBodySize configuration to restrict the amount of data read from the authentication server response. If the authentication server returns an unexpectedly large or unbounded response body, Traefik will allocate unlimited memory, potentially causing an out-of-memory (OOM) condition that crashes the process. This results in a denial of service for all routes served by the affected Traefik instance. This issue has been patched in versions 2.11.38 and 3.6.9.

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

不加限制或调节的资源分配

Traefik 安全漏洞

Traefik是Traefik开源的一款开源的反向代理与负载均衡工具。 Traefik 2.11.38之前版本和3.6.9之前版本存在安全漏洞，该漏洞源于ForwardAuth中间件处理响应时无大小限制，可能导致内存耗尽和进程崩溃，从而引发拒绝服务。

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