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    2 vulnerabilities found for ESPAsyncWebServer by ESP32Async

    CVE-2025-53094 (GCVE-0-2025-53094)

    Vulnerability from cvelistv5 – Published: 2025-06-27 19:57 – Updated: 2025-06-27 20:19
    VLAI
    Title
    ESPAsyncWebServer Vulnerable to CRLF Injection in AsyncWebHeader.cpp
    Summary
    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.
    Severity
    8.7 (High)
    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
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
    • CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2025-53094 (GCVE-0-2025-53094)

    Vulnerability from nvd – Published: 2025-06-27 19:57 – Updated: 2025-06-27 20:19
    VLAI
    Title
    ESPAsyncWebServer Vulnerable to CRLF Injection in AsyncWebHeader.cpp
    Summary
    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.
    Severity
    8.7 (High)
    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
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
    • CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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