{"action":"Upgrade hono to 4.11.4 or later.","affected":[{"fixed":"4.11.4","introduced":"0"}],"component":"hono","cve_ids":["CVE-2026-22818"],"ecosystem":"npm","epss":0.00138,"exploited":false,"fixed_versions":["4.11.4"],"ghsa_id":"GHSA-3vhc-576x-3qv4","id":"tcs_01M5KEYB1B2E384560K64WJXVT","modified_at":"2026-09-10T03:50:58.878082865Z","published_at":"2026-01-13T21:52:03Z","references":["https://osv.dev/vulnerability/GHSA-3vhc-576x-3qv4","https://github.com/honojs/hono/security/advisories/GHSA-3vhc-576x-3qv4","https://nvd.nist.gov/vuln/detail/CVE-2026-22818","https://github.com/honojs/hono/commit/190f6e28e2ca85ce3d1f2f54db1310f5f3eab134","https://github.com/honojs/hono"],"severity":{"label":"high","score":8.2},"sources":[{"source":"osv","source_id":"GHSA-3vhc-576x-3qv4","url":"https://osv.dev/vulnerability/GHSA-3vhc-576x-3qv4"}],"summary":"Hono JWK Auth Middleware has JWT algorithm confusion when JWK lacks \"alg\" (untrusted header.alg fallback)"}