CVE-2021-23568 Prototype Pollution
Attackers can pollute JavaScript object prototypes via unsafe recursive merge, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-23568?
CVE-2021-23568 is a high-severity vulnerability in extend2, published on 7 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The package extend2 before 1.0.1 are vulnerable to Prototype Pollution via the extend function due to unsafe recursive merge.
Weakness: CWE-1321
Which versions are affected by CVE-2021-23568?
2 open source packages ship an affected version, including extend2. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
extend2 npm | All versions | 1.0.1 |
extend2 npm | All versions | 1.0.1 |
Products include Eggjs Extend2.
How do I fix CVE-2021-23568?
Upgrade extend2 to 1.0.1 or later.
Is CVE-2021-23568 being exploited?
There is no known exploitation of CVE-2021-23568 in the wild and no public exploit code.
Sources
Also known as GHSA-gjm5-83cw-p3p2, SNYK-JS-EXTEND2-2320315.