- 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
- security-advisories@github.com
- NVD status
- Awaiting Analysis
CVSS 4.0
- Type
- Secondary
- Base score
- 8.7
- Impact score
- -
- Exploitability score
- -
- Vector string
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- HIGH
- security-advisories@github.com
- CWE-93
- Hype score
- Not currently trending
CVE-2025-53094 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 … https://t.co/g1ta1sTEBx
@CVEnew
27 Jun 2025
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[CVE-2025-53094: HIGH] Vulnerability alert: ESPAsyncWebServer versions up to 3.7.8 have a CRLF injection flaw in `AsyncWebHeader.cpp`. Attackers may manipulate HTTP headers. Patch available in pull request 211.#cve,CVE-2025-53094,#cybersecurity https://t.co/nuNbM8LBf1 https://t.c
@CveFindCom
27 Jun 2025
52 Impressions
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