Vulnerabilities affecting this package (0)
| Vulnerability |
Summary |
Fixed by |
|
This package is not known to be affected by vulnerabilities.
|
Vulnerabilities fixed by this package (1)
| Vulnerability |
Summary |
Aliases |
|
VCID-an5j-y3cq-gbfx
|
lodash vulnerable to Code Injection via `_.template` imports key names
### Impact
The fix for [CVE-2021-23337](https://github.com/advisories/GHSA-35jh-r3h4-6jhm) added validation for the `variable` option in `_.template` but did not apply the same validation to `options.imports` key names. Both paths flow into the same `Function()` constructor sink.
When an application passes untrusted input as `options.imports` key names, an attacker can inject default-parameter expressions that execute arbitrary code at template compilation time.
Additionally, `_.template` uses `assignInWith` to merge imports, which enumerates inherited properties via `for..in`. If `Object.prototype` has been polluted by any other vector, the polluted keys are copied into the imports object and passed to `Function()`.
### Patches
Users should upgrade to version 4.18.0.
The fix applies two changes:
1. Validate `importsKeys` against the existing `reForbiddenIdentifierChars` regex (same check already used for the `variable` option)
2. Replace `assignInWith` with `assignWith` when merging imports, so only own properties are enumerated
### Workarounds
Do not pass untrusted input as key names in `options.imports`. Only use developer-controlled, static key names.
|
CVE-2026-4800
GHSA-r5fr-rjxr-66jc
|