arduino-esp32 is an Arduino core for the ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 and ESP32-H2 microcontrollers. Prior to 3.3.8, the WebServer Digest authentication implementation in arduino-esp32 computes the authentication hash using the URI field from the client's Authorization header, without verifying that it matches the actual requested URI. This allows an attacker who possesses any valid digest response (computed for URI-A) to authenticate requests to a completely different protected URI (URI-B), bypassing per-resource access control. This vulnerability is fixed in 3.3.8.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://github.com/espressif/arduino-esp32/security/advisories/GHSA-28hv-fwm3-rpcq Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · espressifNVD modified 2026-10-26 14:10
Affected (CPE criteria) 1
cpe:2.3:a:espressif:arduino-esp32:*:-:*:*:*:*:*:*
References 1
- https://github.com/espressif/arduino-esp32/security/advisories/GHSA-28hv-fwm3-rpcq Exploit, Vendor Advisory