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    CVE-2007-6203

    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.

    Published:Nov 30, 2007
    Last Modified:Apr 23, 2026
    EPS:Dec 3, 2007
    EPSS Score:0.73543
    CVSS Score:4.3

    Affected Products

    Vendor
    Apache
    Product
    Http Server

    Exploits

    http://procheckup.com/Vulnerability_PR07-37.phphttp://www.securityfocus.com/bid/26663http://procheckup.com/Vulnerability_PR07-37.phphttp://www.securityfocus.com/bid/26663https://www.exploit-db.com/exploits/30835

    Related CVEs

    CVE-2026-48913 (CVSS 7.3) — Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. …
    CVE-2026-42536 (CVSS 7.5) — Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and untrusted…
    CVE-2026-44185 (CVSS 7.3) — Buffer Over-read vulnerability in Apache HTTP Server via outbound OCSP requests to an attacker controlled OCSP…
    CVE-2026-34355 (CVSS 7.5) — A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted …
    CVE-2026-44631 (CVSS 9.8) — Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. Th…
    CVE-2026-44119 (CVSS 5.5) — Improper Privilege Management vulnerability in Apache HTTP Server 2.4.67 and earlier allows local .htaccess au…
    CVE-2026-43951 (CVSS 6.5) — Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response lan…
    CVE-2026-42535 (CVSS 9.1) — A path handling issue in mod_dav_fs in Apache 2.4.67 and earlier allows a WebDAV content author to directly ma…
    CVE-2026-34356 (CVSS 7.5) — Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassRev…
    CVE-2026-44186 (CVSS 7.3) — Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in the mod_proxy_ftp module in Apache HTT…

    References

    http://docs.info.apple.com/article.html?artnum=307562
    http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
    http://lists.opensuse.org/opensuse-security-announce/2008-04/msg00004.html
    http://marc.info/?l=bugtraq&m=125631037611762&w=2
    http://marc.info/?l=bugtraq&m=129190899612998&w=2
    http://procheckup.com/Vulnerability_PR07-37.php
    http://secunia.com/advisories/27906
    http://secunia.com/advisories/28196
    http://secunia.com/advisories/29348
    http://secunia.com/advisories/29420
    http://secunia.com/advisories/29640
    http://secunia.com/advisories/30356
    http://secunia.com/advisories/30732
    http://secunia.com/advisories/33105
    http://secunia.com/advisories/34219
    http://security.gentoo.org/glsa/glsa-200803-19.xml
    http://securityreason.com/securityalert/3411
    http://www-1.ibm.com/support/docview.wss?uid=swg1PK57952
    http://www-1.ibm.com/support/docview.wss?uid=swg24019245
    http://www.fujitsu.com/global/support/software/security/products-f/interstage-200807e.html
    http://www.securityfocus.com/archive/1/484410/100/0/threaded
    http://www.securityfocus.com/bid/26663
    http://www.securitytracker.com/id?1019030
    http://www.ubuntu.com/usn/USN-731-1
    http://www.vupen.com/english/advisories/2007/4060
    http://www.vupen.com/english/advisories/2007/4301
    http://www.vupen.com/english/advisories/2008/0924/references
    http://www.vupen.com/english/advisories/2008/1623/references
    http://www.vupen.com/english/advisories/2008/1875/references
    https://exchange.xforce.ibmcloud.com/vulnerabilities/38800
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12166
    http://docs.info.apple.com/article.html?artnum=307562
    http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
    http://lists.opensuse.org/opensuse-security-announce/2008-04/msg00004.html
    http://marc.info/?l=bugtraq&m=125631037611762&w=2
    http://marc.info/?l=bugtraq&m=129190899612998&w=2
    http://procheckup.com/Vulnerability_PR07-37.php
    http://secunia.com/advisories/27906
    http://secunia.com/advisories/28196
    http://secunia.com/advisories/29348
    http://secunia.com/advisories/29420
    http://secunia.com/advisories/29640
    http://secunia.com/advisories/30356
    http://secunia.com/advisories/30732
    http://secunia.com/advisories/33105
    http://secunia.com/advisories/34219
    http://security.gentoo.org/glsa/glsa-200803-19.xml
    http://securityreason.com/securityalert/3411
    http://www-1.ibm.com/support/docview.wss?uid=swg1PK57952
    http://www-1.ibm.com/support/docview.wss?uid=swg24019245
    http://www.fujitsu.com/global/support/software/security/products-f/interstage-200807e.html
    http://www.securityfocus.com/archive/1/484410/100/0/threaded
    http://www.securityfocus.com/bid/26663
    http://www.securitytracker.com/id?1019030
    http://www.ubuntu.com/usn/USN-731-1
    http://www.vupen.com/english/advisories/2007/4060
    http://www.vupen.com/english/advisories/2007/4301
    http://www.vupen.com/english/advisories/2008/0924/references
    http://www.vupen.com/english/advisories/2008/1623/references
    http://www.vupen.com/english/advisories/2008/1875/references
    https://exchange.xforce.ibmcloud.com/vulnerabilities/38800
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12166

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High