Vulnerability · Published Jan 7, 2022 · Assigned by snyk
CVE-2021-23568Prototype Pollution
High 7.3
In plain English
A high-severity security flaw in extend2. 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 74% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)1.5%top 25.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
The package extend2 before 1.0.1 are vulnerable to Prototype Pollution via the extend function due to unsafe recursive merge.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | extend2 | 1.0.1 | GHSA-gjm5-83cw-p3p2 |
Affected products (as reported)
References
- https://snyk.io/vuln/SNYK-JS-EXTEND2-2320315 x_refsource_MISC
- https://github.com/eggjs/extend2/blob/master/index.js%23L50-L60 x_refsource_MISC
- https://github.com/eggjs/extend2/commit/aa332a59116c8398976434b57ea477c6823054f8 x_refsource_MISC
- https://github.com/eggjs/extend2/pull/2 x_refsource_MISC