{"id":"GHSA-g9r4-xpmj-mj65","aliases":[],"url":"https://o3.security/vulnerability/GHSA-g9r4-xpmj-mj65","summary":"Prototype Pollution in handlebars","details":"Versions of `handlebars` prior to 3.0.8 or 4.5.3 are vulnerable to prototype pollution. It is possible to add or modify properties to the Object prototype through a malicious template. This may allow attackers to crash the application or execute Arbitrary Code in specific conditions.\n\n\n## Recommendation\n\nUpgrade to version 3.0.8, 4.5.3 or later.","published":"2020-09-04T15:06:32Z","modified":"2026-02-04T04:14:30.394235Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"handlebars","fixedVersion":"3.0.8"},{"ecosystem":"npm","name":"handlebars","fixedVersion":"4.5.3"}],"fix":null,"references":[{"type":"WEB","url":"https://www.npmjs.com/advisories/1325"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-02-04T04:14:30.394235Z"}}