CVE-2013-1839

CVE-2013-1839 describes a denial-of-service vulnerability affecting Squid 3.2.x before 3.2.9 and 3.3.x before 3.3.3. A remote attacker can exploit this flaw by sending a specially crafted Accept-Language header containing a comma, leading to an infinite loop and high CPU consumption on the Squid proxy server. This vulnerability has a CVSS score of 7.8 (High), indicating a critical impact on availability with low attack complexity and no authentication required. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.