Prototype Pollution

[axago]

"Versions of handlebars prior to are vulnerable to Prototype Pollution leading to Remote Code Execution"

Remediation
Upgrade to version 4.3.0 or later.

[spacejack]

One workaround is to explicity add the current version of handlbars as a dependency to your package.json:

  "dependencies": {
    ...
    "express-handlebars": "^3.1.0",
    "handlebars": "^4.4.2",
    ...
  },

NPM will no longer show the warning.

[jfoclpf]

same here

┌───────────────┬──────────────────────────────────────────────────────────────┐
│ Low           │ Prototype Pollution                                          │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Package       │ minimist                                                     │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Patched in    │ >=0.2.1 <1.0.0 || >=1.2.3                                    │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Dependency of │ express-handlebars                                           │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Path          │ express-handlebars > handlebars > optimist > minimist        │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ More info     │ https://npmjs.com/advisories/1179                            │
└───────────────┴──────────────────────────────────────────────────────────────┘

[UziTech]

I have finally gotten around to moving this repo to https://github.com/express-handlebars/express-handlebars/ any new development will be done on that repo.

[jfoclpf]

@UziTech what about the npm package? Does it point to the new repo, such that npm update does update this dependency? Thanks

[UziTech]

yes the npm package should point to the correct repo since v4.0.0

[jfoclpf]

Thanks a lot @UziTech , nonetheless it seems the error persist cause handlebars has not yet been updated to remove the vulnerability of its dependencies

npm audit
                                                                                
                       === npm audit security report ===                        
                                                                                
┌──────────────────────────────────────────────────────────────────────────────┐
│                                Manual Review                                 │
│            Some vulnerabilities require your attention to resolve            │
│                                                                              │
│         Visit https://go.npm.me/audit-guide for additional guidance          │
└──────────────────────────────────────────────────────────────────────────────┘
┌───────────────┬──────────────────────────────────────────────────────────────┐
│ Low           │ Prototype Pollution                                          │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Package       │ minimist                                                     │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Patched in    │ >=0.2.1 <1.0.0 || >=1.2.3                                    │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Dependency of │ express-handlebars                                           │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Path          │ express-handlebars > handlebars > optimist > minimist        │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ More info     │ https://npmjs.com/advisories/1179                            │

$ npm list handlebars express-handlebars optimist minimist
delp.pt@1.0.26 /home/joao/delp.pt
├─┬ express-handlebars@4.0.0 
│ └─┬ handlebars@4.7.3 
│   └─┬ optimist@0.6.1 
│     └── minimist@0.0.10 

handlebars-lang/handlebars.js#1661

[jfoclpf]

@UziTech I realized on your dependency of handlebars on your new repo that you have a fixed version dependency.

"handlebars": "^4.7.3",

Maybe it's recommendable to have "4.7.x" or even "4.x" since according to instructions should be always backward compatible