CVE-2020-7792 Prototype Pollution
Prototype pollution in the mout library allows attackers to manipulate object prototypes, 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-2020-7792?
CVE-2020-7792 is a high-severity vulnerability in mout, published on 11 Dec 2020. 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 mout. The deepFillIn function can be used to 'fill missing properties recursively', while the deepMixIn 'mixes objects into the target object, recursively mixing existing child objects as well'. In both cases, the key used to access the target object recursively is not checked, leading to a Prototype Pollution.
Weakness: CWE-1321
Which versions are affected by CVE-2020-7792?
2 open source packages ship an affected version, including mout. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mout npm | All versions | 1.2.3 |
mout npm | All versions | 1.2.3 |
Products include Moutjs Mout.
How do I fix CVE-2020-7792?
Upgrade mout to 1.2.3 or later.
Is CVE-2020-7792 being exploited?
There is no known exploitation of CVE-2020-7792 in the wild and no public exploit code.
Other vulnerabilities in mout
Sources
Also known as CLSA-2026-1789117092, CLSA-2026-1792759966, GHSA-pc58-wgmc-hfjr.