CVE-2011-1498

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-07-07 · updated 2026-06-16
Weakness: CWE-200

Description

Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used with an authenticating proxy server, sends the Proxy-Authorization header to the origin server, which allows remote web servers to obtain sensitive information by logging this header.

Affected products

Apache Software Foundation Apache HttpClient: 4.0, 4.0-alpha1, 4.0-alpha2, 4.0-alpha3, 4.0-alpha4, 4.0-beta1 (+6)

References

http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061440.html
http://marc.info/?l=httpclient-users&m=129853896315461&w=2
http://marc.info/?l=httpclient-users&m=129856318011586&w=2
http://marc.info/?l=httpclient-users&m=129857589129183&w=2
http://marc.info/?l=httpclient-users&m=129858274406594&w=2
http://marc.info/?l=httpclient-users&m=129858299106950&w=2
http://openwall.com/lists/oss-security/2011/04/07/7
http://openwall.com/lists/oss-security/2011/04/08/1
http://securityreason.com/securityalert/8298
http://www.apache.org/dist/httpcomponents/httpclient/RELEASE_NOTES-4.1.x.txt
http://www.kb.cert.org/vuls/id/153049
http://www.securityfocus.com/bid/46974

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