{"action":"Upgrade handlebars to 4.7.9 or later.","affected":[{"fixed":"4.7.9","introduced":"4.6.0"}],"component":"handlebars","cve_ids":[],"ecosystem":"npm","exploited":false,"fixed_versions":["4.7.9"],"ghsa_id":"GHSA-7rx3-28cr-v5wh","id":"tcs_01M5KFAX63S6N488RB59NQ9H29","modified_at":"2026-09-10T03:50:38.084132596Z","published_at":"2026-03-29T15:17:15Z","references":["https://osv.dev/vulnerability/GHSA-7rx3-28cr-v5wh","https://github.com/handlebars-lang/handlebars.js/security/advisories/GHSA-7rx3-28cr-v5wh","https://github.com/advisories/GHSA-765h-qjxv-5f44","https://github.com/handlebars-lang/handlebars.js","https://github.com/handlebars-lang/handlebars.js/releases/tag/v4.7.9"],"severity":{"label":"medium","score":4.8},"sources":[{"source":"osv","source_id":"GHSA-7rx3-28cr-v5wh","url":"https://osv.dev/vulnerability/GHSA-7rx3-28cr-v5wh"}],"summary":"Handlebars.js has a Prototype Method Access Control Gap via Missing __lookupSetter__ Blocklist Entry"}