CVE-2025-54799— Lego does not enforce HTTPS

Lego does not enforce HTTPS

Let's Encrypt client and ACME library written in Go (Lego). In versions 4.25.1 and below, the github.com/go-acme/lego/v4/acme/api package (thus the lego library and the lego cli as well) don't enforce HTTPS when talking to CAs as an ACME client. Unlike the http-01 challenge which solves an ACME challenge over unencrypted HTTP, the ACME protocol requires HTTPS when a client communicates with the CA to performs ACME functions. However, the library fails to enforce HTTPS both in the original discover URL (configured by the library user) and in the subsequent addresses returned by the CAs in the directory and order objects. If users input HTTP URLs or CAs misconfigure endpoints, protocol operations occur over HTTP instead of HTTPS. This compromises privacy by exposing request/response details like account and request identifiers to network attackers. This was fixed in version 4.25.2.

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敏感数据的明文传输

Lego 安全漏洞

Lego是go-acme开源的一个用Go编写的库。 Lego 4.25.1及之前版本存在安全漏洞，该漏洞源于未强制使用HTTPS与CA通信，可能泄露敏感信息。

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