
CVE-2001-0843
https://notcve.org/view.php?id=CVE-2001-0843
06 Dec 2001 — Squid proxy server 2.4 and earlier allows remote attackers to cause a denial of service (crash) via a mkdir-only FTP PUT request. • http://archives.neohapsis.com/archives/linux/conectiva/2001-q3/0020.html •

CVE-1999-1481 – National Science Foundation Squid Web Proxy 1.0/1.1/2.1 - Authentication Failure
https://notcve.org/view.php?id=CVE-1999-1481
31 Dec 1999 — Squid 2.2.STABLE5 and below, when using external authentication, allows attackers to bypass access controls via a newline in the user/password pair. • https://www.exploit-db.com/exploits/19567 •

CVE-1999-1273
https://notcve.org/view.php?id=CVE-1999-1273
20 Feb 1998 — Squid Internet Object Cache 1.1.20 allows users to bypass access control lists (ACLs) by encoding the URL with hexadecimal escape sequences. • http://www.securityfocus.com/archive/1/8551 •