Integer overflow in Tinyproxy

CVE-2026-3945

An integer overflow vulnerability in the HTTP chunked transfer encoding parser in tinyproxy up to and including version 1.11.3 allows an unauthenticated remote attacker to cause a denial of service (DoS). The issue occurs because chunk size values are parsed using strtol without properly validating overflow conditions (e.g., errno == ERANGE).

Vulnerability class: Integer Overflow

EPSS: 0.006 (45.1th percentile) — read the EPSS interpretation.