EUVD-2025-19427
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Lifecycle Timeline
3Tags
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.
Analysis
A security vulnerability in versions (CVSS 8.7) that allows attackers. High severity vulnerability requiring prompt remediation.
Technical Context
Vulnerability type not specified by vendor. CVSS 8.7 indicates high severity. Affects versions.
Affected Products
['versions']
Remediation
Monitor vendor channels for patch availability.
Priority Score
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External POC / Exploit Code
Leaving vuln.today