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Vulnerability details: VCID-318s-st8t-wke2
Vulnerability ID VCID-318s-st8t-wke2
Aliases CVE-2011-1498
GHSA-gw85-4gmf-m7rh
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
generic_textual MODERATE http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061440.html
generic_textual MODERATE http://marc.info/?l=httpclient-users&m=129853896315461&w=2
generic_textual MODERATE http://marc.info/?l=httpclient-users&m=129856318011586&w=2
generic_textual MODERATE http://marc.info/?l=httpclient-users&m=129857589129183&w=2
generic_textual MODERATE http://marc.info/?l=httpclient-users&m=129858274406594&w=2
generic_textual MODERATE http://marc.info/?l=httpclient-users&m=129858299106950&w=2
generic_textual MODERATE http://openwall.com/lists/oss-security/2011/04/07/7
generic_textual MODERATE http://openwall.com/lists/oss-security/2011/04/08/1
epss 0.04395 https://api.first.org/data/v1/epss?cve=CVE-2011-1498
epss 0.04395 https://api.first.org/data/v1/epss?cve=CVE-2011-1498
epss 0.04395 https://api.first.org/data/v1/epss?cve=CVE-2011-1498
generic_textual MODERATE https://bugzilla.redhat.com/show_bug.cgi?id=709531
generic_textual MODERATE http://securityreason.com/securityalert/8298
generic_textual MODERATE https://github.com/apache/httpcomponents-client
generic_textual MODERATE https://github.com/apache/httpcomponents-client/commit/a572756592c969affd0ce87885724e74839176fb
generic_textual MODERATE https://issues.apache.org/jira/browse/HTTPCLIENT-1061
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2011-1498
Reference id Reference type URL
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
https://api.first.org/data/v1/epss?cve=CVE-2011-1498
https://bugzilla.redhat.com/show_bug.cgi?id=709531
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1498
http://securityreason.com/securityalert/8298
https://github.com/apache/httpcomponents-client
https://github.com/apache/httpcomponents-client/commit/a572756592c969affd0ce87885724e74839176fb
https://issues.apache.org/jira/browse/HTTPCLIENT-1061
https://nvd.nist.gov/vuln/detail/CVE-2011-1498
628727 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=628727
GHSA-gw85-4gmf-m7rh https://github.com/advisories/GHSA-gw85-4gmf-m7rh
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.8918
EPSS Score 0.04395
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:38:49.688066+00:00 Debian Importer Import https://security-tracker.debian.org/tracker/data/json 38.6.0