CVE-2021-23426 Prototype Pollution
Attackers can pollute object properties via the merge function in the Proto npm library, 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
- None listed
What is CVE-2021-23426?
CVE-2021-23426 is a medium-severity vulnerability in Proto, published on 1 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This affects all versions of package Proto. It is possible to inject pollute the object property of an application using Proto by leveraging the merge function.
Which versions are affected by CVE-2021-23426?
2 open source packages ship an affected version, including Proto. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
Proto npm | All versions to 1.1.4 | None |
Proto npm | All versions to 1.1.4 | None |
Products include Proto Project Proto.
How do I fix CVE-2021-23426?
No fix has been published for CVE-2021-23426 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-23426 being exploited?
There is no known exploitation of CVE-2021-23426 in the wild and no public exploit code.
Sources
Also known as GHSA-58g2-9fqr-36q2.