{"action":"Upgrade hono to 4.12.12 or later.","affected":[{"fixed":"4.12.12","introduced":"4.0.0"}],"component":"hono","cve_ids":["CVE-2026-39408"],"ecosystem":"npm","epss":0.00504,"exploited":false,"fixed_versions":["4.12.12"],"ghsa_id":"GHSA-xf4j-xp2r-rqqx","id":"tcs_01M5KGHR10JGP33BNYTVHWJ16N","modified_at":"2026-09-10T03:51:03.934940424Z","published_at":"2026-04-08T00:16:51Z","references":["https://osv.dev/vulnerability/GHSA-xf4j-xp2r-rqqx","https://github.com/honojs/hono/security/advisories/GHSA-xf4j-xp2r-rqqx","https://nvd.nist.gov/vuln/detail/CVE-2026-39408","https://github.com/honojs/hono/commit/b470278920fffcfd6d76002755d6db53db827679","https://github.com/honojs/hono","https://github.com/honojs/hono/releases/tag/v4.12.12"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-xf4j-xp2r-rqqx","url":"https://osv.dev/vulnerability/GHSA-xf4j-xp2r-rqqx"},{"source":"nvd","source_id":"CVE-2026-39408","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39408"}],"summary":"Hono: Path traversal in toSSG() allows writing files outside the output directory"}