{"action":"Upgrade org.http4k:http4k-core to 6.49.0.0 or later.","affected":[{"fixed":"6.49.0.0","introduced":"0"}],"component":"org.http4k:http4k-core","cve_ids":[],"ecosystem":"Maven","exploited":false,"fixed_versions":["6.49.0.0"],"ghsa_id":"GHSA-m4w9-hjfw-vwj4","id":"tcs_01M5N94AQV8F3S8E2P901V4ZMS","modified_at":"2026-06-19T21:30:10.196404715Z","published_at":"2026-06-19T21:16:03Z","references":["https://osv.dev/vulnerability/GHSA-m4w9-hjfw-vwj4","https://github.com/http4k/http4k/security/advisories/GHSA-m4w9-hjfw-vwj4","https://datatracker.ietf.org/doc/html/rfc2104","https://github.com/http4k/http4k","https://github.com/http4k/http4k/releases/tag/6.49.0.0"],"severity":{"label":"high"},"sources":[{"source":"osv","source_id":"GHSA-m4w9-hjfw-vwj4","url":"https://osv.dev/vulnerability/GHSA-m4w9-hjfw-vwj4"}],"summary":"http4k: `HmacSha256.hash` (despite the `Hmac` naming) computed a plain unkeyed digest; clarified by deprecation in favour of `Sha256.hash` / `Sha256.hmac`"}