CVE-2026-51268

Description

schreibfaul1 ESP32-audioI2S 3.4.5 has a heap-based buffer overflow vulnerability in the host parsing logic. The dismantle_host() function parses untrusted host and URL input, and subsequent code uses clone_from() to copy parsed host, request host, extension and query_string segments into fixed heap buffers without boundary checking.

References

• https://github.com/programmervuln/cveadvisory-/blob/main/CVE-2026-51268
• https://github.com/schreibfaul1/ESP32-audioI2S/blob/master/src/Audio.cpp