{"action":"Upgrade handlebars to 4.7.9 or later.","affected":[{"fixed":"4.7.9","introduced":"4.0.0"}],"component":"handlebars","cve_ids":["CVE-2026-33939"],"ecosystem":"npm","epss":0.00757,"exploited":false,"fixed_versions":["4.7.9"],"ghsa_id":"GHSA-9cx6-37pm-9jff","id":"tcs_01M5KFFM5YVFS45F0QNPAAPM9Q","modified_at":"2026-09-10T03:51:00.150731044Z","published_at":"2026-03-27T18:21:15Z","references":["https://osv.dev/vulnerability/GHSA-9cx6-37pm-9jff","https://github.com/handlebars-lang/handlebars.js/security/advisories/GHSA-9cx6-37pm-9jff","https://nvd.nist.gov/vuln/detail/CVE-2026-33939","https://github.com/handlebars-lang/handlebars.js/commit/68d8df5a88e0a26fe9e6084c5c6aaebe67b07da2","https://github.com/handlebars-lang/handlebars.js","https://github.com/handlebars-lang/handlebars.js/releases/tag/v4.7.9"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-9cx6-37pm-9jff","url":"https://osv.dev/vulnerability/GHSA-9cx6-37pm-9jff"}],"summary":"Handlebars.js has Denial of Service via Malformed Decorator Syntax in Template Compilation"}