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Vulnerability record · CVE-2004-2480 · published 31 December 2004

CVE-2004-2480: National science foundation squid web proxy cache vulnerability

National Science Foundation · Squid Web Proxy Cache

Squid Web Proxy Cache 2.3.STABLE5 allows remote attackers to bypass security controls and access arbitrary websites via "@@" sequences in a URL within Internet Explorer.

5.0 CVSS 2.0 Medium EPSS 3.0% · top 13.0%
5.0CVSS 2.0 base score
3.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 4 tagged exploit
16 Jun 2026Last modified by NVD

Description

Squid Web Proxy Cache 2.3.STABLE5 allows remote attackers to bypass security controls and access arbitrary websites via "@@" sequences in a URL within Internet Explorer.

AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://archives.neohapsis.com/archives/bugtraq/2004-05/0070.html Exploit
http://www.securityfocus.com/bid/10315 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/16153
http://archives.neohapsis.com/archives/bugtraq/2004-05/0070.html Exploit
http://www.securityfocus.com/bid/10315 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/16153

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2004-0541Squid Web Proxy NTLM auth buffer overflow allows remote code executionSquid Web Proxy Cache 2.5.x and 3.x, when built with NTLM handlers enabled, contains a buffer overflow in the ntlm_check_auth function. A long passwo…EPSS 71%analysed5.0CVE-2004-2479National science foundation squid web proxy cache vulnerabilitySquid Web Proxy Cache 2.5 might allow remote attackers to obtain sensitive information via URLs containing invalid hostnames that cause DNS operation…EPSS 2.1%

Source: NIST National Vulnerability Database (record CVE-2004-2480), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.