Threats affecting pkg:github/miniupnp/miniupnpd

CVE-2026-107159 is a divide-by-zero vulnerability in miniupnpd up to version 2.3.11 when built with the --strict option. This flaw occurs in the ProcessSSDPData() function and can be triggered by unauthenticated local network attackers sending a multicast M-SEARCH datagram with MX: 0 and a known ST to port 1900. Exploitation causes the daemon to crash, resulting in denial of UPnP IGD service.

miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to cause a denial of service or information disclosure by sending a malformed SOAPAction header with a single quote. Attackers can trigger an out-of-bounds memory read by exploiting improper length validation in ParseHttpHeaders(), where the parsed length underflows to a large unsigned value when passed to memchr(), causing the process to scan memory far beyond the allocated HTTP request buffer.