GHSA-h726-x36v-rx45 Prototype Pollution in lodash.merge
Attackers can pollute Object prototypes via lodash.merge, potentially leading to code execution or privilege escalation in applications using the library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-h726-x36v-rx45?
GHSA-h726-x36v-rx45 is a vulnerability in lodash.merge, published on 3 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Versions of lodash.merge before 4.6.2 are vulnerable to prototype pollution. The function merge 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 4.6.2 or later.
Which versions are affected by GHSA-h726-x36v-rx45?
2 open source packages ship an affected version, including lodash.merge.
| Package | Affected | Fixed in |
|---|---|---|
lodash.merge npm | All versions | 4.6.2 |
lodash.merge npm | All versions | 4.6.2 |
How do I fix GHSA-h726-x36v-rx45?
Upgrade lodash.merge to 4.6.2 or later.
Is GHSA-h726-x36v-rx45 being exploited?
There is no known exploitation of GHSA-h726-x36v-rx45 in the wild and no public exploit code.