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Vulnerability record · CVE-2007-3947 · published 24 July 2007

CVE-2007-3947: Lighttpd vulnerability

Lighttpd · Lighttpd

request.c in lighttpd 1.4.15 allows remote attackers to cause a denial of service (daemon crash) by sending an HTTP request with duplicate headers, as demonstrated by a request containing two Location header lines, which results in a segmentation fault.

5.8 CVSS 2.0 Medium EPSS 8.1% · top 5.4%
5.8CVSS 2.0 base score
8.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
26References
16 Jun 2026Last modified by NVD

Description

request.c in lighttpd 1.4.15 allows remote attackers to cause a denial of service (daemon crash) by sending an HTTP request with duplicate headers, as demonstrated by a request containing two Location header lines, which results in a segmentation fault.

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

Affected products

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

References

LinkTags
http://osvdb.org/38313
http://secunia.com/advisories/26130 Vendor Advisory
http://secunia.com/advisories/26158 Vendor Advisory
http://secunia.com/advisories/26505
http://secunia.com/advisories/26593
http://security.gentoo.org/glsa/glsa-200708-11.xml
http://trac.lighttpd.net/trac/changeset/1869
http://trac.lighttpd.net/trac/ticket/1232
http://www.debian.org/security/2007/dsa-1362
http://www.novell.com/linux/security/advisories/2007_15_sr.html
http://www.securityfocus.com/archive/1/474131/100/0/threaded
http://www.securityfocus.com/bid/24967
http://www.vupen.com/english/advisories/2007/2585
http://osvdb.org/38313
http://secunia.com/advisories/26130 Vendor Advisory
http://secunia.com/advisories/26158 Vendor Advisory
http://secunia.com/advisories/26505
http://secunia.com/advisories/26593
http://security.gentoo.org/glsa/glsa-200708-11.xml
http://trac.lighttpd.net/trac/changeset/1869
http://trac.lighttpd.net/trac/ticket/1232
http://www.debian.org/security/2007/dsa-1362
http://www.novell.com/linux/security/advisories/2007_15_sr.html
http://www.securityfocus.com/archive/1/474131/100/0/threaded
http://www.securityfocus.com/bid/24967
http://www.vupen.com/english/advisories/2007/2585

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2007-3947), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.