{"id":"CVE-2015-8861","aliases":["CLSA-2026-1773101681","CLSA-2026-1774743817","CLSA-2026-1774743830","CLSA-2026-1774743837","CLSA-2026-1774743840","CLSA-2026-1776991069","CLSA-2026-1784682992","CLSA-2026-1786731948","DEBIAN-CVE-2015-8861","EUVD-2018-0564","GHSA-2cf5-4w76-r9qv","GHSA-39q2-94rc-95cp","GHSA-9prh-257w-9277","GHSA-cj63-jhhr-wcxv","GHSA-cjmm-f4jc-qw8r","GHSA-g9r4-xpmj-mj65","GHSA-h8r8-wccr-v5f2","GHSA-q2c6-c6pm-g3gh","GHSA-q42p-pg8m-cqh6","ROOT-APP-NPM-GHSA-2cf5-4w76-r9qv","ROOT-APP-NPM-GHSA-g9r4-xpmj-mj65","ROOT-APP-NPM-GHSA-q2c6-c6pm-g3gh","ROOT-APP-NPM-GHSA-q42p-pg8m-cqh6","UBUNTU-CVE-2015-8861"],"status":"published","title":"Arbitrary Code Execution in handlebars","description":"The handlebars package before 4.0.0 for Node.js allows remote attackers to conduct cross-site scripting (XSS) attacks by leveraging a template with an attribute that is not quoted.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02612,"percentile":0.8552,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321","CWE-471","CWE-79","CWE-94"],"published":"2017-01-23T21:00:00Z","modified":"2026-10-26T13:21:31Z","fixes":[{"ecosystem":"npm","package":"handlebars","fixed_in":["3.0.8","4.5.2","4.0.0","4.5.3","4.1.2","4.0.14","3.0.7"],"sources":["ghsa","osv"]},{"ecosystem":"TuxCare:npm","package":"handlebars","fixed_in":["1.3.0-tuxcare.1","1.0.12-tuxcare.2","3.0.8-tuxcare.2"],"sources":["osv"]},{"ecosystem":"Root:npm","package":"handlebars","fixed_in":["3.0.7-aikido.3","3.0.3-aikido.2","3.0.8-aikido.1","3.0.8-aikido.2","3.0.7-aikido.1","3.0.7-aikido.2"],"sources":["osv"]},{"ecosystem":"Root:npm","package":"@rootio/handlebars","fixed_in":["3.0.7-root.io.3","3.0.3-root.io.2","3.0.8-root.io.1","3.0.8-root.io.2","3.0.7-root.io.1","3.0.7-root.io.2"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.8"}]}]},{"source":"ghsa","ecosystem":"npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.5.2"}]}]},{"source":"ghsa","ecosystem":"npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.0"}]}]},{"source":"ghsa","ecosystem":"npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.8"}]}]},{"source":"ghsa","ecosystem":"npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.5.3"}]}]},{"source":"ghsa","ecosystem":"npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.8"}]}]},{"source":"ghsa","ecosystem":"npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.5.3"}]}]},{"source":"ghsa","ecosystem":"npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.1.0"},{"fixed":"4.1.2"}]}]},{"source":"ghsa","ecosystem":"npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.0.14"}]}]},{"source":"ghsa","ecosystem":"npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.7"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.3-tuxcare.0"},{"fixed":"3.0.3-tuxcare.1"}]}],"versions":["3.0.3"],"bundled":5},{"source":"osv","ecosystem":"TuxCare:npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.0-tuxcare.0"},{"fixed":"1.3.0-tuxcare.1"}]}],"versions":["1.3.0"]},{"source":"osv","ecosystem":"TuxCare:npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.12-tuxcare.0"},{"fixed":"1.0.12-tuxcare.2"}]}],"versions":["1.0.12","1.0.12-tuxcare.1"]},{"source":"osv","ecosystem":"TuxCare:npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0-tuxcare.0"},{"fixed":"2.0.0-tuxcare.3"}]}],"versions":["2.0.0","2.0.0-tuxcare.1","2.0.0-tuxcare.2"],"bundled":3},{"source":"osv","ecosystem":"TuxCare:npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.0-tuxcare.0"},{"fixed":"1.3.0-tuxcare.3"}]}],"versions":["1.3.0","1.3.0-tuxcare.1","1.3.0-tuxcare.2"],"bundled":3},{"source":"osv","ecosystem":"TuxCare:npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.9-tuxcare.0"},{"fixed":"4.7.9-tuxcare.1"}]}],"versions":["4.7.9"],"bundled":5},{"source":"osv","ecosystem":"TuxCare:npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.8-tuxcare.0"},{"fixed":"3.0.8-tuxcare.2"}]}],"versions":["3.0.8","3.0.8-tuxcare.1"]},{"source":"osv","ecosystem":"Debian:12","package":"mustache.js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.1-1","3.0.1-2","3.2.0-1","3.2.0-2"]},{"source":"osv","ecosystem":"Debian:13","package":"mustache.js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.1-1","3.0.1-2","3.2.0-1","3.2.0-2"]},{"source":"osv","ecosystem":"Debian:14","package":"mustache.js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.1-1","3.0.1-2","3.2.0-1","3.2.0-2"]},{"source":"osv","ecosystem":"npm","package":"handlebars","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.0.8"}]}]},{"source":"osv","ecosystem":"npm","package":"handlebars","ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.5.2"}]}]},{"source":"osv","ecosystem":"npm","package":"handlebars","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.0.0"}]}]},{"source":"osv","ecosystem":"npm","package":"handlebars","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.0.8"}]}]},{"source":"osv","ecosystem":"npm","package":"handlebars","ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.5.3"}]}]},{"source":"osv","ecosystem":"npm","package":"handlebars","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.0.8"}]}]},{"source":"osv","ecosystem":"npm","package":"handlebars","ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.5.3"}]}]},{"source":"osv","ecosystem":"npm","package":"handlebars","ranges":[{"type":"SEMVER","events":[{"introduced":"4.1.0"},{"fixed":"4.1.2"}]}]},{"source":"osv","ecosystem":"npm","package":"handlebars","ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.0.14"}]}]},{"source":"osv","ecosystem":"npm","package":"handlebars","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.0.7"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.7-aikido.3"},{"fixed":"3.0.3-aikido.2"},{"fixed":"3.0.8-aikido.1"},{"fixed":"3.0.8-aikido.2"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"@rootio/handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.7-root.io.3"},{"fixed":"3.0.3-root.io.2"},{"fixed":"3.0.8-root.io.1"},{"fixed":"3.0.8-root.io.2"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.7-aikido.3"},{"fixed":"3.0.3-aikido.2"},{"fixed":"3.0.8-aikido.1"},{"fixed":"3.0.8-aikido.2"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"@rootio/handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.7-root.io.3"},{"fixed":"3.0.3-root.io.2"},{"fixed":"3.0.8-root.io.1"},{"fixed":"3.0.8-root.io.2"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.7-aikido.3"},{"fixed":"3.0.3-aikido.2"},{"fixed":"3.0.8-aikido.1"},{"fixed":"3.0.8-aikido.2"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"@rootio/handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.7-root.io.3"},{"fixed":"3.0.3-root.io.2"},{"fixed":"3.0.8-root.io.1"},{"fixed":"3.0.8-root.io.2"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.3-aikido.2"},{"fixed":"3.0.7-aikido.1"},{"fixed":"3.0.7-aikido.2"},{"fixed":"3.0.7-aikido.3"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"@rootio/handlebars","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.3-root.io.2"},{"fixed":"3.0.7-root.io.1"},{"fixed":"3.0.7-root.io.2"},{"fixed":"3.0.7-root.io.3"}]}]}],"products":[{"vendor":"handlebars.js_project","product":"handlebars.js"}],"references":[{"url":"https://www.tenable.com/security/tns-2016-18","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://www.sourceclear.com/blog/handlebars_vulnerability_research_findings/","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","advisory","fix"]},{"url":"http://www.securityfocus.com/bid/96434","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2016/04/20/11","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","article","web"]},{"url":"https://www.npmjs.com/advisories/1316","tags":["web"]},{"url":"https://github.com/advisories/GHSA-2cf5-4w76-r9qv"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-8861","tags":["advisory"]},{"url":"https://github.com/wycats/handlebars.js/pull/1083","tags":["web"]},{"url":"https://blog.srcclr.com/handlebars_vulnerability_research_findings/"},{"url":"https://github.com/advisories/GHSA-9prh-257w-9277","tags":["advisory"]},{"url":"https://www.npmjs.com/advisories/61","tags":["web"]},{"url":"https://www.npmjs.com/advisories/1325","tags":["web"]},{"url":"https://github.com/advisories/GHSA-g9r4-xpmj-mj65"},{"url":"https://www.npmjs.com/advisories/1324","tags":["web"]},{"url":"https://github.com/advisories/GHSA-q2c6-c6pm-g3gh"},{"url":"https://github.com/handlebars-lang/handlebars.js/issues/1495","tags":["web"]},{"url":"https://github.com/handlebars-lang/handlebars.js/commit/7372d4e9dffc9d70c09671aa28b9392a1577fd86","tags":["web"]},{"url":"https://snyk.io/vuln/SNYK-JS-HANDLEBARS-173692","tags":["web"]},{"url":"https://www.npmjs.com/advisories/755","tags":["web"]},{"url":"https://github.com/handlebars-lang/handlebars.js/commit/0d6d8c335ad81bad1b672fc56b6a44f6aa472dac","tags":["web"]},{"url":"https://github.com/handlebars-lang/handlebars.js/commit/85c8783b34fc6d36145d8b53885ad0b9e3c3f9c4","tags":["web"]},{"url":"https://github.com/handlebars-lang/handlebars.js/commit/cd38583216dce3252831916323202749431c773e","tags":["web"]},{"url":"https://github.com/advisories/GHSA-q42p-pg8m-cqh6"},{"url":"https://security-tracker.debian.org/tracker/CVE-2015-8861","tags":["advisory"]},{"url":"https://blog.srcclr.com/handlebars_vulnerability_research_findings","tags":["web"]},{"url":"https://github.com/wycats/handlebars.js","tags":["package"]},{"url":"https://www.sourceclear.com/blog/handlebars_vulnerability_research_findings","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2015-8861","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2015-8861","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2015-8861","description":"The handlebars package before 4.0.0 for Node.js allows remote attackers to conduct cross-site scripting (XSS) attacks by leveraging a template with an attribute that is not quoted.","status":"published","published":"2017-01-23T21:00:00Z","modified":"2024-08-06T08:29:22.027Z","updated_at":"2026-11-02T14:35:40.900357Z"}],"euvd":[{"id":"EUVD-2018-0564","description":"The handlebars package before 4.0.0 for Node.js allows remote attackers to conduct cross-site scripting (XSS) attacks by leveraging a template with an attribute that is not quoted.","status":"published","published":"2017-01-23T21:00:00Z","modified":"2024-08-06T08:29:22Z","updated_at":"2026-11-03T01:57:25.349664Z"}],"ghsa":[{"id":"GHSA-2cf5-4w76-r9qv","title":"Arbitrary Code Execution in handlebars","description":"Versions of `handlebars` prior to 3.0.8 or 4.5.2 are vulnerable to Arbitrary Code Execution. The package's lookup helper fails to properly validate templates, allowing attackers to submit templates that execute arbitrary JavaScript in the system. It can be used to run arbitrary code in a server processing Handlebars templates or on a victim's browser (effectively serving as Cross-Site Scripting).\n\nThe following template can be used to demonstrate the vulnerability:  \n```{{#with \"constructor\"}}\n\t{{#with split as |a|}}\n\t\t{{pop (push \"alert('Vulnerable Handlebars JS');\")}}\n\t\t{{#with (concat (lookup join (slice 0 1)))}}\n\t\t\t{{#each (slice 2 3)}}\n\t\t\t\t{{#with (apply 0 a)}}\n\t\t\t\t\t{{.}}\n\t\t\t\t{{/with}}\n\t\t\t{{/each}}\n\t\t{{/with}}\n\t{{/with}}\n{{/with}}```\n\n\n## Recommendation\n\nUpgrade to version 3.0.8, 4.5.2 or later.","status":"published","published":"2020-09-04T14:57:38Z","modified":"2024-02-07T05:08:28Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:L","level":"high"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:37:36.076201Z"},{"id":"GHSA-9prh-257w-9277","title":"Cross-Site Scripting in handlebars","description":"Versions of `handlebars` prior to 4.0.0 are affected by a cross-site scripting vulnerability when attributes in handlebar templates are not quoted.\n\n\n## Proof of Concept\nTemplate:\n```\u003ca href={{foo}}/\u003e```\n\nInput:\n```{ 'foo' : 'test.com onload=alert(1)'}```\n\nRendered result:\n```\u003ca href=test.com onload=alert(1)/\u003e```\n\n\n## Recommendation\n\nUpdate to version 4.0.0 or later.\nAlternatively, ensure that all attributes in handlebars templates are encapsulated with quotes.","status":"published","published":"2018-10-23T17:20:12Z","modified":"2023-01-09T05:02:59Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:36:04.396827Z"},{"id":"GHSA-q42p-pg8m-cqh6","title":"Prototype Pollution in handlebars","description":"Versions of `handlebars` prior to 4.0.14 are vulnerable to Prototype Pollution. Templates may alter an Objects' prototype, thus allowing an attacker to execute arbitrary code on the server.\n\n\n## Recommendation\n\nFor handlebars 4.1.x upgrade to 4.1.2 or later.\nFor handlebars 4.0.x upgrade to 4.0.14 or later.","status":"published","published":"2019-06-05T14:07:48Z","modified":"2023-11-29T20:32:55Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-471"],"updated_at":"2026-11-02T14:37:22.840002Z"},{"id":"GHSA-g9r4-xpmj-mj65","title":"Prototype Pollution in handlebars","description":"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.","status":"published","published":"2020-09-04T15:06:32Z","modified":"2023-01-09T05:04:02Z","cwes":["CWE-1321"],"updated_at":"2026-11-02T14:36:08.267721Z"},{"id":"GHSA-q2c6-c6pm-g3gh","title":"Arbitrary Code Execution in handlebars","description":"Versions of `handlebars` prior to 3.0.8 or 4.5.3 are vulnerable to Arbitrary Code Execution. The package's lookup helper fails to properly validate templates, allowing attackers to submit templates that execute arbitrary JavaScript in the system. It is due to an incomplete fix for a [previous issue](https://www.npmjs.com/advisories/1316). This vulnerability can be used to run arbitrary code in a server processing Handlebars templates or on a victim's browser (effectively serving as Cross-Site Scripting).\n\n\n## Recommendation\n\nUpgrade to version 3.0.8, 4.5.3 or later.","status":"published","published":"2020-09-04T15:07:38Z","modified":"2023-01-09T05:04:24Z","updated_at":"2026-11-02T14:36:09.554044Z"}],"nvd":[{"id":"CVE-2015-8861","description":"The handlebars package before 4.0.0 for Node.js allows remote attackers to conduct cross-site scripting (XSS) attacks by leveraging a template with an attribute that is not quoted.","status":"published","published":"2017-01-23T21:59:00.72Z","modified":"2026-06-17T00:35:23.187Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:03:16.97467Z"}],"osv":[{"id":"CVE-2015-8861","description":"The handlebars package before 4.0.0 for Node.js allows remote attackers to conduct cross-site scripting (XSS) attacks by leveraging a template with an attribute that is not quoted.","status":"published","published":"2017-01-23T21:59:00Z","modified":"2026-04-10T03:45:35.681466Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:01.068991Z"},{"id":"DEBIAN-CVE-2015-8861","description":"The handlebars package before 4.0.0 for Node.js allows remote attackers to conduct cross-site scripting (XSS) attacks by leveraging a template with an attribute that is not quoted.","status":"published","published":"2017-01-23T21:59:00.72Z","modified":"2026-09-09T07:01:26.339026277Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:27.04239Z"},{"id":"GHSA-2cf5-4w76-r9qv","title":"Arbitrary Code Execution in handlebars","description":"Versions of `handlebars` prior to 3.0.8 or 4.5.2 are vulnerable to Arbitrary Code Execution. The package's lookup helper fails to properly validate templates, allowing attackers to submit templates that execute arbitrary JavaScript in the system. It can be used to run arbitrary code in a server processing Handlebars templates or on a victim's browser (effectively serving as Cross-Site Scripting).\n\nThe following template can be used to demonstrate the vulnerability:  \n```{{#with \"constructor\"}}\n\t{{#with split as |a|}}\n\t\t{{pop (push \"alert('Vulnerable Handlebars JS');\")}}\n\t\t{{#with (concat (lookup join (slice 0 1)))}}\n\t\t\t{{#each (slice 2 3)}}\n\t\t\t\t{{#with (apply 0 a)}}\n\t\t\t\t\t{{.}}\n\t\t\t\t{{/with}}\n\t\t\t{{/each}}\n\t\t{{/with}}\n\t{{/with}}\n{{/with}}```\n\n\n## Recommendation\n\nUpgrade to version 3.0.8, 4.5.2 or later.","status":"published","published":"2020-09-04T14:57:38Z","modified":"2026-09-10T03:48:33.174881747Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:L","level":"high"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:46:34.338541Z"},{"id":"GHSA-9prh-257w-9277","title":"Cross-Site Scripting in handlebars","description":"Versions of `handlebars` prior to 4.0.0 are affected by a cross-site scripting vulnerability when attributes in handlebar templates are not quoted.\n\n\n## Proof of Concept\nTemplate:\n```\u003ca href={{foo}}/\u003e```\n\nInput:\n```{ 'foo' : 'test.com onload=alert(1)'}```\n\nRendered result:\n```\u003ca href=test.com onload=alert(1)/\u003e```\n\n\n## Recommendation\n\nUpdate to version 4.0.0 or later.\nAlternatively, ensure that all attributes in handlebars templates are encapsulated with quotes.","status":"published","published":"2018-10-23T17:20:12Z","modified":"2026-09-10T03:47:03.242095655Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:43.875515Z"},{"id":"GHSA-q42p-pg8m-cqh6","title":"Prototype Pollution in handlebars","description":"Versions of `handlebars` prior to 4.0.14 are vulnerable to Prototype Pollution. Templates may alter an Objects' prototype, thus allowing an attacker to execute arbitrary code on the server.\n\n\n## Recommendation\n\nFor handlebars 4.1.x upgrade to 4.1.2 or later.\nFor handlebars 4.0.x upgrade to 4.0.14 or later.","status":"published","published":"2019-06-05T14:07:48Z","modified":"2026-09-10T03:48:23.648231681Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-471"],"updated_at":"2026-11-02T15:46:54.055966Z"},{"id":"UBUNTU-CVE-2015-8861","description":"The handlebars package before 4.0.0 for Node.js allows remote attackers to conduct cross-site scripting (XSS) attacks by leveraging a template with an attribute that is not quoted.","status":"withdrawn","published":"2017-01-23T21:59:00Z","modified":"2025-07-16T07:33:40.451065Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"},{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:11.100633Z"},{"id":"CLSA-2026-1773101681","title":"TuxCare security update for handlebars (9 CVEs)","description":"TuxCare rebuilt handlebars to address 9 CVEs. Fixed in 3.0.3-tuxcare.1.","status":"published","published":"2026-08-04T14:52:11Z","modified":"2026-10-15T09:45:26.324830766Z","updated_at":"2026-11-02T15:43:43.249928Z"},{"id":"CLSA-2026-1774743817","title":"TuxCare security update for handlebars (1 CVE)","description":"TuxCare rebuilt handlebars to address 1 CVE. Fixed in 1.3.0-tuxcare.1.","status":"published","published":"2026-08-04T14:52:15Z","modified":"2026-10-15T09:47:48.668758728Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1774743830","title":"TuxCare security update for handlebars (3 CVEs)","description":"TuxCare rebuilt handlebars to address 3 CVEs. Fixed in 1.0.12-tuxcare.2.","status":"published","published":"2026-08-04T14:52:16Z","modified":"2026-10-23T19:28:13.663406058Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1774743837","title":"TuxCare security update for handlebars (7 CVEs)","description":"TuxCare rebuilt handlebars to address 7 CVEs. Fixed in 2.0.0-tuxcare.3.","status":"published","published":"2026-08-04T14:52:16Z","modified":"2026-10-15T09:47:48.473951217Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1774743840","title":"TuxCare security update for handlebars (6 CVEs)","description":"TuxCare rebuilt handlebars to address 6 CVEs. Fixed in 1.3.0-tuxcare.3.","status":"published","published":"2026-08-04T14:52:16Z","modified":"2026-10-15T09:47:48.721630553Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1776991069","title":"TuxCare security update for handlebars (9 CVEs)","description":"TuxCare rebuilt handlebars to address 9 CVEs. Fixed in 4.7.9-tuxcare.1.","status":"published","published":"2026-08-04T14:52:28Z","modified":"2026-10-15T09:47:50.026036318Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"CLSA-2026-1784682992","title":"TuxCare security update for handlebars (1 CVE)","description":"TuxCare rebuilt handlebars to address 1 CVE. Fixed in 3.0.8-tuxcare.2.","status":"published","published":"2026-08-04T14:52:46Z","modified":"2026-10-15T09:47:54.166098964Z","updated_at":"2026-11-02T15:43:46.482572Z"},{"id":"CLSA-2026-1786731948","title":"TuxCare security update for dompurify (34 CVEs)","description":"TuxCare rebuilt dompurify to address 34 CVEs. Fixed in 3.0.3-tuxcare.1.","status":"withdrawn","published":"2026-08-14T18:25:48Z","modified":"2026-10-26T13:21:31Z","updated_at":"2026-11-02T15:43:47.20725Z"},{"id":"GHSA-g9r4-xpmj-mj65","title":"Prototype Pollution in handlebars","description":"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.","status":"published","published":"2020-09-04T15:06:32Z","modified":"2026-09-10T03:49:13.649783342Z","cwes":["CWE-1321"],"updated_at":"2026-11-02T15:46:47.472172Z"},{"id":"GHSA-q2c6-c6pm-g3gh","title":"Arbitrary Code Execution in handlebars","description":"Versions of `handlebars` prior to 3.0.8 or 4.5.3 are vulnerable to Arbitrary Code Execution. The package's lookup helper fails to properly validate templates, allowing attackers to submit templates that execute arbitrary JavaScript in the system. It is due to an incomplete fix for a [previous issue](https://www.npmjs.com/advisories/1316). This vulnerability can be used to run arbitrary code in a server processing Handlebars templates or on a victim's browser (effectively serving as Cross-Site Scripting).\n\n\n## Recommendation\n\nUpgrade to version 3.0.8, 4.5.3 or later.","status":"published","published":"2020-09-04T15:07:38Z","modified":"2026-09-10T03:48:58.277710865Z","updated_at":"2026-11-02T15:46:53.700556Z"},{"id":"ROOT-APP-NPM-GHSA-2cf5-4w76-r9qv","title":"GHSA-2cf5-4w76-r9qv in handlebars - Patched by Root","description":"Root has patched GHSA-2cf5-4w76-r9qv in the handlebars package for Root:npm. Multiple fixed versions available.","status":"published","published":"2026-10-20T10:47:36Z","modified":"2026-10-20T11:15:38.540557189Z","updated_at":"2026-11-02T15:53:27.940619Z"},{"id":"ROOT-APP-NPM-GHSA-g9r4-xpmj-mj65","title":"GHSA-g9r4-xpmj-mj65 in handlebars - Patched by Root","description":"Root has patched GHSA-g9r4-xpmj-mj65 in the handlebars package for Root:npm. Multiple fixed versions available.","status":"published","published":"2026-10-20T10:47:36Z","modified":"2026-10-20T11:15:39.391242933Z","updated_at":"2026-11-02T15:53:27.940619Z"},{"id":"ROOT-APP-NPM-GHSA-q2c6-c6pm-g3gh","title":"GHSA-q2c6-c6pm-g3gh in handlebars - Patched by Root","description":"Root has patched GHSA-q2c6-c6pm-g3gh in the handlebars package for Root:npm. Multiple fixed versions available.","status":"published","published":"2026-10-20T10:47:36Z","modified":"2026-10-20T11:15:37.928892011Z","updated_at":"2026-11-02T15:53:27.940619Z"},{"id":"ROOT-APP-NPM-GHSA-q42p-pg8m-cqh6","title":"GHSA-q42p-pg8m-cqh6 in handlebars - Patched by Root","description":"Root has patched GHSA-q42p-pg8m-cqh6 in the handlebars package for Root:npm. Multiple fixed versions available.","status":"published","published":"2026-10-20T10:47:36Z","modified":"2026-10-20T11:15:37.540463486Z","updated_at":"2026-11-02T15:53:27.940619Z"}]}}