Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2004-0189

Published: Mar 15, 2004 | Modified: Apr 03, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
Vulnerability-free packages from our partners
root.io logo minimus.io logo echo.ai logo
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2004-0189
CWEhttps://cwe.mitre.org/data/definitions/NVD-Other.html

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.

Affected Software

NameVendorStart VersionEnd Version
SquidSquid2.0_patch2 (including)2.0_patch2 (including)
SquidSquid2.1_patch2 (including)2.1_patch2 (including)
SquidSquid2.3_stable5 (including)2.3_stable5 (including)
SquidSquid2.4 (including)2.4 (including)
SquidSquid2.4_stable7 (including)2.4_stable7 (including)
SquidSquid2.5_stable3 (including)2.5_stable3 (including)
SquidSquid2.5_stable4 (including)2.5_stable4 (including)
Red Hat Enterprise Linux 3RedHatsquid-7:2.5.STABLE3-5.3E*
Red Hat Linux 9RedHat*

References

Aqua Security is the largest pure-play cloud native security company, providing customers the freedom to innovate and run their businesses with minimal friction. The Aqua Cloud Native Security Platform provides prevention, detection, and response automation across the entire application lifecycle to secure the build, secure cloud infrastructure and secure running workloads wherever they are deployed.
Copyright © 2026 Aqua Security Software Ltd.   Privacy Policy | Terms of Use