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I. Basic Information for CVE-2025-53094
Vulnerability Information

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Vulnerability Title
ESPAsyncWebServer Vulnerable to CRLF Injection in AsyncWebHeader.cpp
Source: NVD (National Vulnerability Database)
Vulnerability Description
ESPAsyncWebServer is an asynchronous HTTP and WebSocket server library for ESP32, ESP8266, RP2040 and RP2350. In versions up to and including 3.7.8, a CRLF (Carriage Return Line Feed) injection vulnerability exists in the construction and output of HTTP headers within `AsyncWebHeader.cpp`. Unsanitized input allows attackers to inject CR (`\r`) or LF (`\n`) characters into header names or values, leading to arbitrary header or response manipulation. Manipulation of HTTP headers and responses can enable a wide range of attacks, making the severity of this vulnerability high. A fix is available at pull request 211 and is expected to be part of version 3.7.9.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对CRLF序列的转义处理不恰当(CRLF注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
ESPAsyncWebServer 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ESPAsyncWebServer是ESP32 Asynchronous Networking社区的一个用于ESP8266和ESP32等微控制器的异步Web服务器。 ESPAsyncWebServer 3.7.8及之前版本存在注入漏洞,该漏洞源于AsyncWebHeader.cpp中HTTP标头构造和输出存在CRLF注入,可能导致任意标头或响应操纵。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
ESP32AsyncESPAsyncWebServer <= 3.7.8 -
II. Public POCs for CVE-2025-53094
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III. Intelligence Information for CVE-2025-53094
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