CVE-2025-53007

arduino-esp32 provides an Arduino core for the ESP32. Versions prior to 3.3.0-RC1 and 3.2.1 contain a HTTP Response Splitting vulnerability. The sendHeader function takes arbitrary input for the HTTP header name and value, concatenates them into an HTTP header line, and appends this to the outgoi...

CVE-2025-53007

Arduino-ESP32 (Arduino core for ESP32) prior to 3.3.0-RC1 and 3.2.1 is affected by an HTTP Response Splitting vulnerability in WebServer.cpp: the sendHeader function accepts unvalidated header name/value, enabling CRLF injection to add headers or disrupt the HTTP response. Impact can include head...

CVE-2025-53007 arduino-esp32 vulnerable to CRLF injection in WebServer.cpp

arduino-esp32 provides an Arduino core for the ESP32. Versions prior to 3.3.0-RC1 and 3.2.1 contain a HTTP Response Splitting vulnerability. The sendHeader function takes arbitrary input for the HTTP header name and value, concatenates them into an HTTP header line, and appends this to the outgoi...