CVE-2021-23568

Prototype Pollution

View on CVE.org

Published Jan 7, 2022 CVSS 3.1 · 7.3 High EPSS 1.5% KEV · Not listed

Description

The package extend2 before 1.0.1 are vulnerable to Prototype Pollution via the extend function due to unsafe recursive merge.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

extend2

affected

Version	Status	Constraints
`unspecified`	affected	< 1.0.1

Configuration 1 [-]

cpe:2.3:a:eggjs:extend2:*:*:*:*:*:node.js:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2022-0606	The package extend2 before 1.0.1 are vulnerable to Prototype Pollution via the extend function due to unsafe recursive merge.
Github GHSA	GHSA-gjm5-83cw-p3p2	Prototype Pollution in extend2

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: 1.5% (1.498% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/eggjs/extend2/blob/master/index.js%23L50-L60
https://github.com/eggjs/extend2/commit/aa332a59116c8398976434b57ea477c6823054f8
https://github.com/eggjs/extend2/pull/2
https://snyk.io/vuln/SNYK-JS-EXTEND2-2320315

History

No history.

Subscriptions

Eggjs Extend2

Weaknesses

CWE-1321

Sources

CVE record Updated: Sep 16, 2024, 5:54 PM

Status: PUBLISHED
Assigner: snyk
Published: Jan 7, 2022, 8:05 PM
Updated: Sep 16, 2024, 5:54 PM
Reserved: Jan 8, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:38 AM

Status: Modified
Published: Jan 10, 2022, 2:10 PM
Modified: Jun 17, 2026, 3:38 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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