{"action":"Upgrade rack to 2.2.23 or later.","affected":[{"fixed":"2.2.23","introduced":"0"},{"fixed":"3.1.21","introduced":"3.0.0.beta1"},{"fixed":"3.2.6","introduced":"3.2.0"}],"component":"rack","cve_ids":["CVE-2026-34785"],"ecosystem":"RubyGems","epss":0.00387,"exploited":false,"fixed_versions":["2.2.23","3.1.21","3.2.6"],"ghsa_id":"GHSA-h2jq-g4cq-5ppq","id":"tcs_01M5KEKFNFV5NZ3PTGD1CYC5S1","modified_at":"2026-09-10T03:51:01.819837916Z","published_at":"2026-04-02T18:44:25Z","references":["https://osv.dev/vulnerability/GHSA-h2jq-g4cq-5ppq","https://github.com/rack/rack/security/advisories/GHSA-h2jq-g4cq-5ppq","https://nvd.nist.gov/vuln/detail/CVE-2026-34785","https://github.com/rack/rack","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2026-34785.yml"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-h2jq-g4cq-5ppq","url":"https://osv.dev/vulnerability/GHSA-h2jq-g4cq-5ppq"}],"summary":"Rack::Static prefix matching can expose unintended files under the static root"}