CVE-2004-0189

HighCVSS 7.5/10Last modified Jun 16, 2026

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.

Metrics

CVSS 2.0 7.5/10AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected software

No affected versions have been published.

Timeline

Published: Mar 15, 2004
Last modified: Jun 16, 2026
NVD status: Modified

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