{"action":"Upgrade org.apache.httpcomponents.client5:httpclient5 to 5.6.1 or later.","affected":[{"fixed":"5.6.1","introduced":"5.6-alpha1"}],"component":"org.apache.httpcomponents.client5:httpclient5","cve_ids":["CVE-2026-40542"],"ecosystem":"Maven","epss":0.00536,"exploited":false,"fixed_versions":["5.6.1"],"ghsa_id":"GHSA-v468-qcjx-r72w","id":"tcs_01M5N9D5Z6P08MZRASEKP46959","modified_at":"2026-09-10T03:51:03.206251606Z","published_at":"2026-04-22T09:31:31Z","references":["https://osv.dev/vulnerability/GHSA-v468-qcjx-r72w","https://nvd.nist.gov/vuln/detail/CVE-2026-40542","https://github.com/apache/httpcomponents-client/commit/726eac2323d370435d8afca1e0540aa099927f18","https://github.com/apache/httpcomponents-client","https://lists.apache.org/thread/tfmgv86xr0z1y096vs3z0y315t1v3o97","http://www.openwall.com/lists/oss-security/2026/04/22/5"],"severity":{"label":"high","score":7.3},"sources":[{"source":"osv","source_id":"GHSA-v468-qcjx-r72w","url":"https://osv.dev/vulnerability/GHSA-v468-qcjx-r72w"}],"summary":"Apache HttpClient accepts SCRAM-SHA-256 authentication without proper mutual authentication verification"}