CVE-2018-3719 Prototype Pollution in mixin-deep
Attackers can modify the Object prototype via __proto__ in mixin-deep, affecting all objects in the application.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-3719?
CVE-2018-3719 is a high-severity vulnerability in HackerOne mixin-deep node module, published on 7 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
mixin-deep node module before 1.3.1 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability, which allows a malicious user to modify the prototype of "Object" via __proto__, causing the addition or modification of an existing property that will exist on all objects.
Which versions are affected by CVE-2018-3719?
2 open source packages ship an affected version, including mixin-deep. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mixin-deep npm | All versions | 1.3.1 |
mixin-deep npm | All versions | 1.3.1 |
Products include Mixin-Deep Project Mixin-Deep.
How do I fix CVE-2018-3719?
Upgrade mixin-deep to 1.3.1 or later.
Is CVE-2018-3719 being exploited?
There is no known exploitation of CVE-2018-3719 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2018-3719, GHSA-3mpr-hq3p-49h9, UBUNTU-CVE-2018-3719.