Description
A prototype pollution vulnerability was found in lodash <4.17.11 where the functions merge, mergeWith, and defaultsDeep can be tricked into adding or modifying properties of Object.prototype.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| HackerOne | lodash | <4.7.11 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | node-lodash | 4.17.11+dfsg-1 | — |
| Debian 13 | node-lodash | 4.17.11+dfsg-1 | — |
| Debian 12 | node-lodash | 4.17.11+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | node-lodash | No fix yet | — |
| Ubuntu Pro 16.04 LTS | node-lodash | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | lodash | < 4.17.11 | 4.17.11 | GHSA-4xc9-xhrj-v574 |
| RubyGems | lodash-rails | < 4.17.11 | 4.17.11 | GHSA-4xc9-xhrj-v574 |
Advisories 1
- WID-SEC-2026-3307 IBM MQ Appliance (Axios Node.js): Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 22, 2026