{"schema_version":"1.9.2","id":"GHSA-7f5c-rpf4-86p8","published":"2021-09-02T17:16:46Z","modified":"2026-10-27T16:15:05.322069543Z","aliases":["CVE-2021-32822"],"summary":"hbs: Insertion of Sensitive Information into Externally-Accessible File or Directory and Exposure of Sensitive Information to an Unauthorized Actor","details":"The npm hbs package is an Express view engine wrapper for Handlebars. Depending on usage, users of hbs may be vulnerable to a file disclosure vulnerability. There is currently no patch for this vulnerability. hbs mixes pure template data with engine configuration options through the Express render API. By overwriting internal configuration options a file disclosure vulnerability may be triggered in downstream applications. For an example PoC see the referenced GHSL-2021-020.","affected":[{"package":{"name":"hbs","ecosystem":"npm","purl":"pkg:npm/hbs"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"4.4.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/09/GHSA-7f5c-rpf4-86p8/GHSA-7f5c-rpf4-86p8.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32822"},{"type":"PACKAGE","url":"https://github.com/pillarjs/hbs"},{"type":"ADVISORY","url":"https://securitylab.github.com/advisories/GHSL-2021-020-pillarjs-hbs"}],"database_specific":{"cwe_ids":["CWE-200","CWE-538","CWE-94"],"github_reviewed":true,"github_reviewed_at":"2021-08-26T17:12:06Z","nvd_published_at":"2021-08-16T19:15:00Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N"}]}