https://db.gcve.eu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Thu, 01 Oct 2026 05:37:17 +0000 https://db.gcve.eu/vuln/ghsa-r5fr-rjxr-66jc <p><strong>Affected:</strong> npm: lodash, npm: lodash-es, npm: lodash-amd, npm: lodash.template</p> <p>### Impact</p> <p>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.</p> <p>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.</p> <p>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()`.</p> <p>### Patches</p> <p>Users should upgrade to version 4.18.0.</p> <p>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</p> <p>### Workarounds</p> <p>Do not pass untrusted input as key names in `options.imports`. Only use developer-controlled, static key names.</p> <p><strong>Affected:</strong> npm: lodash, npm: lodash-es, npm: lodash-amd, npm: lodash.template</p> <p>### Impact</p> <p>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.</p> <p>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.</p> <p>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()`.</p> <p>### Patches</p> <p>Users should upgrade to version 4.18.0.</p> <p>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</p> <p>### Workarounds</p> <p>Do not pass untrusted input as key names in `options.imports`. Only use developer-controlled, static key names.</p> https://db.gcve.eu/vuln/ghsa-r5fr-rjxr-66jc