Unrated severityNVD Advisory· Published Mar 15, 2004· Updated Jun 16, 2026
CVE-2004-0189
CVE-2004-0189
Description
The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") character, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
8cpe:2.3:a:squid:squid:2.0_patch2:*:*:*:*:*:*:*+ 6 more
- cpe:2.3:a:squid:squid:2.0_patch2:*:*:*:*:*:*:*
- cpe:2.3:a:squid:squid:2.1_patch2:*:*:*:*:*:*:*
- cpe:2.3:a:squid:squid:2.3_stable5:*:*:*:*:*:*:*
- cpe:2.3:a:squid:squid:2.4:*:*:*:*:*:*:*
- cpe:2.3:a:squid:squid:2.4_stable7:*:*:*:*:*:*:*
- cpe:2.3:a:squid:squid:2.5_stable3:*:*:*:*:*:*:*
- cpe:2.3:a:squid:squid:2.5_stable4:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
15- www.securityfocus.com/bid/9778nvdExploitPatchVendor Advisory
- www.squid-cache.org/Advisories/SQUID-2004_1.txtnvdExploitPatchVendor Advisory
- ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.16/SCOSA-2005.16.txtnvd
- patches.sgi.com/support/free/security/advisories/20040404-01-U.ascnvd
- distro.conectiva.com.br/atualizacoes/nvd
- marc.infonvd
- security.gentoo.org/glsa/glsa-200403-11.xmlnvd
- www.debian.org/security/2004/dsa-474nvd
- www.mandrakesoft.com/security/advisoriesnvd
- www.osvdb.org/5916nvd
- www.redhat.com/support/errata/RHSA-2004-133.htmlnvd
- www.redhat.com/support/errata/RHSA-2004-134.htmlnvd
- exchange.xforce.ibmcloud.com/vulnerabilities/15366nvd
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A877nvd
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A941nvd
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