{"action":"Upgrade apache2 to 2.4.48-4 or later.","affected":[{"fixed":"2.4.48-4","introduced":"0"}],"component":"apache2","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["2.4.48-4"],"id":"tcs_01M5NFQ7VV30NYP2EX615CF86H","modified_at":"2026-10-23T18:03:59.549648848Z","published_at":"2021-08-16T08:15:11.480Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-33193","https://security-tracker.debian.org/tracker/CVE-2021-33193"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-33193#Debian:13/apache2","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-33193"}],"summary":"A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.4"}