CVE-2020-8268 Prototype pollution in json8-merge-patch
Attackers can inject or modify global object properties via prototype pollution in the json8-merge-patch library, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-8268?
CVE-2020-8268 is a high-severity code injection vulnerability in json8-merge-patch, published on 9 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Prototype pollution vulnerability in json8-merge-patch npm package < 1.0.3 may allow attackers to inject or modify methods and properties of the global object constructor.
Which versions are affected by CVE-2020-8268?
2 open source packages ship an affected version, including json8-merge-patch. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
json8-merge-patch npm | All versions | 1.0.3 |
json8-merge-patch npm | All versions | 1.0.3 |
Products include Json8-Merge-Patch Project Json8-Merge-Patch.
How do I fix CVE-2020-8268?
Upgrade json8-merge-patch to 1.0.3 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2020-8268 being exploited?
There is no known exploitation of CVE-2020-8268 in the wild and no public exploit code.
Sources
Also known as GHSA-8v9x-9xqg-r8mr.