CVE-2020-7770

Prototype Pollution

View on CVE.org

Published Nov 12, 2020 CVSS 3.1 · 6.5 Medium EPSS 1.9% KEV · Not listed

Description

This affects the package json8 before 1.0.3. The function adds in the target object the property specified in the path, however it does not properly check the key being set, leading to a prototype pollution.

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

json8

affected

Version	Status	Constraints
`unspecified`	affected	< 1.0.3

Configuration 1 [-]

cpe:2.3:a:json8_project:json8:*:*:*:*:*:*:*:*

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-2021-0999	This affects the package json8 before 1.0.3. The function adds in the target object the property specified in the path, however it does not properly check the key being set, leading to a prototype pollution.
Github GHSA	GHSA-7h43-gx24-p529	Prototype pollution in json8

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction Required

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: 1.9% (1.893% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/sonnyp/JSON8/commit/2e890261b66cbc54ae01d0c79c71b0fd18379e7e
https://snyk.io/vuln/SNYK-JS-JSON8-1017116

History

No history.

Subscriptions

Json8 Project Json8

Weaknesses

CWE-1321

Sources

CVE record Updated: Sep 16, 2024, 8:42 PM

Status: PUBLISHED
Assigner: snyk
Published: Nov 12, 2020, 10:15 AM
Updated: Sep 16, 2024, 8:42 PM
Reserved: Jan 21, 2020, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:25 AM

Status: Modified
Published: Nov 12, 2020, 11:15 AM
Modified: Jun 17, 2026, 3:25 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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