VulnerabilityModified
CVE-2021-23568
The package extend2 before 1.0.1 are vulnerable to Prototype Pollution via the extend function due to unsafe recursive merge.
CRITICAL 9.8EPSS 1.45%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.45%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The package extend2 before 1.0.1 are vulnerable to Prototype Pollution via the extend function due to unsafe recursive merge.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.45% probability · 72th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1321
- Affected
- eggjs/extend2
- Source
- report@snyk.io
References
- https://github.com/eggjs/extend2/blob/master/index.js%23L50-L60Broken Link
- https://github.com/eggjs/extend2/commit/aa332a59116c8398976434b57ea477c6823054f8Patch, Third Party Advisory
- https://github.com/eggjs/extend2/pull/2Issue Tracking, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-EXTEND2-2320315Exploit, Third Party Advisory
- https://github.com/eggjs/extend2/blob/master/index.js%23L50-L60Broken Link
- https://github.com/eggjs/extend2/commit/aa332a59116c8398976434b57ea477c6823054f8Patch, Third Party Advisory
- https://github.com/eggjs/extend2/pull/2Issue Tracking, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-EXTEND2-2320315Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.