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Fencer Vulns
medium 5.0

CVE-2004-2480 json

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

published 2004-12-31 21 y ago modified 2026-06-16 4 mo ago also EUVD-2004-2471

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.0%
EPSS 3.0% chance of exploitation in 30 days, percentile 87%
public exploits
1
Exploit-DB

Summary

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.

Patch / fix

  • squid Debian 14, Debian 13, Debian 12 2.5

debian advisories DEBIAN-CVE-2004-2480

Timeline

  1. First public exploit (EDB-24105)
  2. Published

Exploit prediction

3.03% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-24105 National Science Foundation Squid Proxy 2.3 - Internet Access Control Bypass remote, 2004-05-10
  • securityfocus.com http://www.securityfocus.com/bid/10315 referenced PoC, tagged "exploit" by a source, unverified
  • archives.neohapsis.com http://archives.neohapsis.com/archives/bugtraq/2004-05/0070.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.