What is the CVSS score of CVE-2021-23820?

CVE-2021-23820 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.8%.

Is there a public PoC exploit available for CVE-2021-23820?

Yes, a public proof-of-concept exploit is available for CVE-2021-23820. Prioritise patching immediately. EPSS: 1.8%.

Is there a patch available for CVE-2021-23820?

Yes, a patch is available for CVE-2021-23820. Update the affected software to the latest version immediately.

Json Pointer CVE-2021-23820

CRITICAL

Access of Resource Using Incompatible Type (Type Confusion) (CWE-843)

2021-11-03 report@snyk.io

Memory Corruption Authentication Bypass Json Pointer

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Nov 03, 2021 - 18:15 nvd

CRITICAL 9.8

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

3,553 npm packages depend on json-pointer (369 direct, 3,202 indirect)

Ecosystem-wide dependent count for version 0.6.2.

DescriptionNVD

This affects all versions of package json-pointer. A type confusion vulnerability can lead to a bypass of CVE-2020-7709 when the pointer components are arrays.

AnalysisAI

This affects all versions of package json-pointer. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Access of Resource Using Incompatible Type (Type Confusion) (CWE-843), which allows attackers to execute arbitrary code by exploiting type confusion in the application. This affects all versions of package json-pointer. A type confusion vulnerability can lead to a bypass of CVE-2020-7709 when the pointer components are arrays. Affected products include: Manuelstofer Json-Pointer.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Enforce strict type checking, use type-safe languages, validate object types before operations.