CVE-2021-3918 Prototype Pollution in kriszyp/json-schema
Prototype pollution in the json-schema library allows attackers to modify object prototypes, potentially leading to code execution or security bypasses.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-3918?
CVE-2021-3918 is a critical vulnerability in Debian Debian Linux, published on 13 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Weakness: CWE-1321
Which versions are affected by CVE-2021-3918?
2 open source packages ship an affected version, including json-schema. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
json-schema npm | All versions | 0.4.0 |
json-schema npm | All versions | 0.4.0 |
Products include Debian Debian Linux, Json-Schema Project Json-Schema.
How do I fix CVE-2021-3918?
Upgrade json-schema to 0.4.0 or later.
Is CVE-2021-3918 being exploited?
There is no known exploitation of CVE-2021-3918 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as CLSA-2026-1781052738, DEBIAN-CVE-2021-3918, DLA-3228-1, GHSA-896r-f27r-55mw, MGASA-2022-0463, MINI-54pr-jvvg-57w5 and 3 more.