GHSA-h5mp-5q4p-ggf5
Prototype Pollution in lodash.defaultsdeep
GHSA-h5mp-5q4p-ggf5 is a vulnerability with no CVSS score yet in lodash.defaultsdeep, published September 3, 2020. No source lists public exploit code. Fixed in lodash.defaultsdeep 4.6.1.
- Severity
- UnratedNo CVSS score yet
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
4.6.1lodash.defaultsdeep
Description
Versions of lodash.defaultsdeep before 4.6.1 are vulnerable to prototype pollution. The function mergeWith may allow 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 4.6.1 or later.
Affected packages
| Package | Affected | Fixed |
|---|---|---|
lodash.defaultsdeepnpm | before 4.6.1 | 4.6.1 |
What each source reports
GitHub AdvisoriesNo score
Prototype Pollution in lodash.defaultsdeep
Versions of lodash.defaultsdeep before 4.6.1 are vulnerable to prototype pollution. The function mergeWith may allow 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 4.6.1 or later.
- Record
GHSA-h5mp-5q4p-ggf5- Weakness
- CWE-1321
- Updated
- 2026-11-02
OSVNo score
Prototype Pollution in lodash.defaultsdeep
Versions of lodash.defaultsdeep before 4.6.1 are vulnerable to prototype pollution. The function mergeWith may allow 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 4.6.1 or later.
- Record
GHSA-h5mp-5q4p-ggf5- Weakness
- CWE-1321
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.