{"cve":"CVE-2011-1498","nvd":{"published":"2011-07-07T21:55:01.663","modified":"2026-06-16T23:29:30.027","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-200"],"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"],"products":["apache:httpclient"],"source":"nvd","synced_at":"2026-10-19T19:58:50.521460154+00:00"},"epss":{"cve":"CVE-2011-1498","score":0.06685,"percentile":0.93901,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-gw85-4gmf-m7rh","url":"https://osv.dev/vulnerability/GHSA-gw85-4gmf-m7rh","summary":"Exposure of Sensitive Information to an Unauthorized Actor in Apache HttpClient","modified":"2024-12-03T06:01:01.943495Z","packages":[{"ecosystem":"Maven","name":"org.apache.httpcomponents:httpclient","purl":"pkg:maven/org.apache.httpcomponents/httpclient","ranges":[">=4.0.0 <4.1.1"],"fixed":["4.1.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}