Every CVE Search/ Get API key

CVE-2007-6203

Apache HTTP Server 2.0.x and 2.2.x does not sanitize the HTTP Method specifier header from an...

4.3 MediumPublic exploitFix available

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

80.7%Up 7.6 points since Feb 4, 2022
90%50%10%1%

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 MediumAV: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

Affected packages
PackageAffectedFixed
apache2
Debian:12
before 2.2.6-3
2.2.6-3
apache2
Debian:13
before 2.2.6-3
2.2.6-3
apache2
Debian:14
before 2.2.6-3
2.2.6-3

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBApache 2.2.4 - 413 Error HTTP Request Method Cross-Site Scripting2007-11-30

History

History
RecordedChangedSources
aliasesEUVD
affected, aliases, exploits, facts, references, titleExploit-DB, GitHub Advisories, OSV
first indexedCVE 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

Show 28 moreShow less
MoveEnter Open