Vulnerability · Published Jan 31, 2021 · Assigned by snyk
CVE-2021-23329Prototype Pollution
High 7.5
In plain English
A high-severity security flaw in nested-object-assign. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.5%top 25.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
The package nested-object-assign before 1.0.4 are vulnerable to Prototype Pollution via the default function, as demonstrated by running the PoC below.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | nested-object-assign | 1.0.4 | GHSA-c497-v8pv-ch6x |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | nested-object-assign | unspecified – before 1.0.4 |
References
- https://snyk.io/vuln/SNYK-JS-NESTEDOBJECTASSIGN-1065977 x_refsource_MISC
- https://github.com/Geta/NestedObjectAssign/pull/11 x_refsource_MISC