{"id":"CVE-2021-32822","aliases":["EUVD-2021-2003","GHSA-7f5c-rpf4-86p8"],"status":"published","title":"File disclosure in hbs","description":"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.","severity":{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00982,"percentile":0.62772,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200","CWE-538","CWE-94"],"published":"2021-08-16T18:45:10Z","modified":"2026-10-27T16:15:05Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"hbs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.4.0"}]}]},{"source":"osv","ecosystem":"npm","package":"hbs","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"4.4.0"}]}]}],"products":[{"vendor":"hbs_project","product":"hbs"},{"vendor":"pillarjs","product":"hbs"}],"references":[{"url":"https://securitylab.github.com/advisories/GHSL-2021-020-pillarjs-hbs/","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32822","tags":["advisory"]},{"url":"https://securitylab.github.com/advisories/GHSL-2021-020-pillarjs-hbs","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-7f5c-rpf4-86p8"},{"url":"https://github.com/pillarjs/hbs","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-32822","title":"File disclosure in hbs","description":"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.","status":"published","published":"2021-08-16T18:45:10Z","modified":"2024-08-03T23:33:55.94Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-538"],"updated_at":"2026-11-02T14:33:07.349244Z"}],"euvd":[{"id":"EUVD-2021-2003","description":"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.","status":"published","published":"2021-08-16T18:45:10Z","modified":"2024-08-03T23:33:55Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:24:35.30045Z"}],"ghsa":[{"id":"GHSA-7f5c-rpf4-86p8","title":"hbs: Insertion of Sensitive Information into Externally-Accessible File or Directory and Exposure of Sensitive Information to an Unauthorized Actor","description":"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.","status":"published","published":"2021-09-02T17:16:46Z","modified":"2026-10-27T16:09:59Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-94","CWE-200","CWE-538"],"updated_at":"2026-11-02T14:41:37.912288Z"}],"nvd":[{"id":"CVE-2021-32822","description":"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.","status":"published","published":"2021-08-16T19:15:14.083Z","modified":"2026-06-17T03:53:42.127Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-538","CWE-94"],"updated_at":"2026-11-02T14:06:56.943671Z"}],"osv":[{"id":"GHSA-7f5c-rpf4-86p8","title":"hbs: Insertion of Sensitive Information into Externally-Accessible File or Directory and Exposure of Sensitive Information to an Unauthorized Actor","description":"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.","status":"published","published":"2021-09-02T17:16:46Z","modified":"2026-10-27T16:15:05.322069543Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200","CWE-538","CWE-94"],"updated_at":"2026-11-02T15:46:41.002603Z"}]}}