CriticalGHSA-jf85-cpcp-j695CVE-2019-10744SNYK-JS-LODASH-450202

Prototype Pollution in lodash

Published 10 Jul 2019 · Updated 10 Sept 2026

Affected packages

lodashnpm
Affected
<4.17.12
Fixed in
4.17.12
Update to the fixed version for your release line, for example:npm install lodash@4.17.12
lodash-esnpm
Affected
<4.17.14
Fixed in
4.17.14
Update to the fixed version for your release line, for example:npm install lodash-es@4.17.14
lodash-amdnpm
Affected
<4.17.13
Fixed in
4.17.13
Update to the fixed version for your release line, for example:npm install lodash-amd@4.17.13
lodash.defaultsdeepnpm
Affected
<4.6.1
Fixed in
4.6.1
Update to the fixed version for your release line, for example:npm install lodash.defaultsdeep@4.6.1

Details

Versions of lodash before 4.17.12 are vulnerable to Prototype Pollution. The function defaultsDeep allows a malicious user to modify the prototype of Object via {constructor: {prototype: {...}}} causing the addition or modification of an existing property that will exist on all objects.

Recommendation

Update to version 4.17.12 or later.

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References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.