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Vulnerability record · CVE-2006-0042 · published 18 February 2006

CVE-2006-0042: Apache libapreq2 vulnerability

Apache · Libapreq2

Unspecified vulnerability in (1) apreq_parse_headers and (2) apreq_parse_urlencoded functions in Apache2::Request (Libapreq2) before 2.07 allows remote attackers to cause a denial of service (CPU consumption) via unknown attack vectors that result in quadratic computational complexity.

5.0 CVSS 2.0 Medium EPSS 6.2% · top 6.7%
5.0CVSS 2.0 base score
6.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
20References
16 Jun 2026Last modified by NVD

Description

Unspecified vulnerability in (1) apreq_parse_headers and (2) apreq_parse_urlencoded functions in Apache2::Request (Libapreq2) before 2.07 allows remote attackers to cause a denial of service (CPU consumption) via unknown attack vectors that result in quadratic computational complexity.

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

Affected products

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

References

LinkTags
http://secunia.com/advisories/18846 PatchThird Party Advisory
http://secunia.com/advisories/19139 PatchThird Party Advisory
http://secunia.com/advisories/19658 Third Party Advisory
http://securityreason.com/securityalert/737 Third Party Advisory
http://svn.apache.org/viewcvs.cgi/httpd/apreq/tags/v2_07/CHANGES?rev=376998&view=markup Vendor Advisory
http://www.debian.org/security/2006/dsa-1000 PatchThird Party Advisory
http://www.gentoo.org/security/en/glsa/glsa-200604-08.xml Third Party Advisory
http://www.securityfocus.com/bid/16710 PatchThird Party AdvisoryVDB Entry
http://www.vupen.com/english/advisories/2006/0645 Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/24917 Third Party AdvisoryVDB Entry
http://secunia.com/advisories/18846 PatchThird Party Advisory
http://secunia.com/advisories/19139 PatchThird Party Advisory
http://secunia.com/advisories/19658 Third Party Advisory
http://securityreason.com/securityalert/737 Third Party Advisory
http://svn.apache.org/viewcvs.cgi/httpd/apreq/tags/v2_07/CHANGES?rev=376998&view=markup Vendor Advisory
http://www.debian.org/security/2006/dsa-1000 PatchThird Party Advisory
http://www.gentoo.org/security/en/glsa/glsa-200604-08.xml Third Party Advisory
http://www.securityfocus.com/bid/16710 PatchThird Party AdvisoryVDB Entry
http://www.vupen.com/english/advisories/2006/0645 Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/24917 Third Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2006-0042), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.