CVE-2007-6203
Apache HTTP Server 2.0.x and 2.2.x does not sanitize the HTTP Method specifier header from an...
Apache HTTP Server 2.0.x and 2.2.x does not sanitize the HTTP Method specifier header from an HTTP request when it is reflected back in a "413 Request Entity Too Large" error message, which might allow cross-site scripting (XSS) style attacks using web client components that can send arbitrary headers in requests, as demonstrated via an HTTP request containing an invalid Content-length value, a similar issue to CVE-2006-3918.
Exploit likelihood
What each source reports
NVD Score used
4.3
Apache HTTP Server 2.0.x and 2.2.x does not sanitize the HTTP Method specifier header from an HTTP request when it is reflected back in a "413 Request Entity Too Large" error message, which might allow cross-site scripting (XSS) style attacks using web client components that can send arbitrary headers in requests, as demonstrated via an HTTP request containing an invalid Content-length value, a similar issue to CVE-2006-3918.
- Record
CVE-2007-6203- CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
Apache HTTP Server 2.0.x and 2.2.x does not sanitize the HTTP Method specifier header from an HTTP request when it is reflected back in a "413 Request Entity Too Large" error message, which might allow cross-site scripting (XSS) style attacks using web client components that can send arbitrary headers in requests, as demonstrated via an HTTP request containing an invalid Content-length value, a similar issue to CVE-2006-3918.
- Record
CVE-2007-6203- Updated
- 2026-11-02
EUVDEUVD-2007-6171 No score
Apache HTTP Server 2.0.x and 2.2.x does not sanitize the HTTP Method specifier header from an HTTP request when it is reflected back in a "413 Request Entity Too Large" error message, which might allow cross-site scripting (XSS) style attacks using web client components that can send arbitrary headers in requests, as demonstrated via an HTTP request containing an invalid Content-length value, a similar issue to CVE-2006-3918.
- Record
EUVD-2007-6171- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g7xr-j224-9v5w No score
Apache HTTP Server 2.0.x and 2.2.x does not sanitize the HTTP Method specifier header from an...
Apache HTTP Server 2.0.x and 2.2.x does not sanitize the HTTP Method specifier header from an HTTP request when it is reflected back in a "413 Request Entity Too Large" error message, which might allow cross-site scripting (XSS) style attacks using web client components that can send arbitrary headers in requests, as demonstrated via an HTTP request containing an invalid Content-length value, a similar issue to CVE-2006-3918.
- Record
GHSA-g7xr-j224-9v5w- Weakness
- CWE-79
- Updated
- 2026-11-02
OSV No score
Apache HTTP Server 2.0.x and 2.2.x does not sanitize the HTTP Method specifier header from an HTTP request when it is reflected back in a "413 Request Entity Too Large" error message, which might allow cross-site scripting (XSS) style attacks using web client components that can send arbitrary headers in requests, as demonstrated via an HTTP request containing an invalid Content-length value, a similar issue to CVE-2006-3918.
- Record
CVE-2007-6203- Updated
- 2026-11-02
OSVDEBIAN-CVE-2007-6203 No score
Apache HTTP Server 2.0.x and 2.2.x does not sanitize the HTTP Method specifier header from an HTTP request when it is reflected back in a "413 Request Entity Too Large" error message, which might allow cross-site scripting (XSS) style attacks using web client components that can send arbitrary headers in requests, as demonstrated via an HTTP request containing an invalid Content-length value, a similar issue to CVE-2006-3918.
- Record
DEBIAN-CVE-2007-6203- Updated
- 2026-11-02
Affected products
Affected packages
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Apache 2.2.4 - 413 Error HTTP Request Method Cross-Site Scripting | 2007-11-30 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| affected, aliases, exploits, facts, references, title | Exploit-DB, GitHub Advisories, OSV | |
| first indexed | CVE List, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2007-6203 is a medium vulnerability (CVSS 4.3) in Apache Http Server, published December 3, 2007. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 80.7%, the 99th percentile. Fixed in apache2 2.2.6-3.
References
www-1.ibm.com/support/docview.wss?uid=swg1PK57952
security.gentoo.org/glsa/glsa-200803-19.xml
securityfocus.com/bid/26663
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12166
secunia.com/advisories/34219
marc.info?l=bugtraq&m=125631037611762&w=2
Show 28 moreShow less
secunia.com/advisories/27906
vupen.com/english/advisories/2008/1623/references
vupen.com/english/advisories/2008/0924/references
securityreason.com/securityalert/3411
vupen.com/english/advisories/2007/4301
ubuntu.com/usn/USN-731-1
marc.info?l=bugtraq&m=129190899612998&w=2
secunia.com/advisories/29420
vupen.com/english/advisories/2007/4060
lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
secunia.com/advisories/33105
securitytracker.com/id?1019030
www-1.ibm.com/support/docview.wss?uid=swg24019245
securityfocus.com/archive/1/484410/100/0/threaded
secunia.com/advisories/29348
fujitsu.com/global/support/software/security/products-f/interstage-200807e.html
secunia.com/advisories/28196
lists.opensuse.org/opensuse-security-announce/2008-04/msg00004.html
secunia.com/advisories/30356
docs.info.apple.com/article.html?artnum=307562
secunia.com/advisories/29640
exchange.xforce.ibmcloud.com/vulnerabilities/38800
vupen.com/english/advisories/2008/1875/references
secunia.com/advisories/30732
procheckup.com/Vulnerability_PR07-37.php
nvd.nist.gov/vuln/detail/CVE-2007-6203
github.com/advisories/GHSA-g7xr-j224-9v5w
security-tracker.debian.org/tracker/CVE-2007-6203