What is CVE-2021-23807?

CVE-2021-23807 is a medium-severity vulnerability in Janl Jsonpointer, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 5.6/10. Published 2021-11-03.

How severe is CVE-2021-23807?

Medium severity. CVSS v3 base score is 5.6 out of 10.

Is CVE-2021-23807 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Janl Jsonpointer

CVE-2021-23807

This affects the package jsonpointer before 5.0.0. A type confusion vulnerability can lead to a bypass of a previous Prototype Pollution fix when the pointer components are arrays.

EPSS: 0.025 (83.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Janl Jsonpointer
N/a Jsonpointer — versions unspecified

Weakness classification (CWE)

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

Public proof-of-concept exploits

References

report@snyk.io (Exploit, Patch, VDB Entry, Third Party Advisory, x_refsource_MISC, Mitigation)
report@snyk.io (Exploit, Patch, VDB Entry, Third Party Advisory, x_refsource_MISC, Mitigation)
report@snyk.io (Patch, Third Party Advisory, x_refsource_MISC)
report@snyk.io (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-23807?: CVE-2021-23807 is a medium-severity vulnerability in Janl Jsonpointer, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 5.6/10. Published 2021-11-03.
How severe is CVE-2021-23807?: Medium severity. CVSS v3 base score is 5.6 out of 10.
Is CVE-2021-23807 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.