CVE-2021-23820

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.87% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 78.9% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-11-03 17:20Z4 YR AGO

Last updated

2024-09-16 16:14Z2 YR AGO

Reserved

2021-01-08

Assigning CNA

snyk

Record state

PUBLISHED

Severity

Medium (CVSS 5.6)

CNA CVSS vector

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

Weaknesses

• CWE-843Access of Resource Using Incompatible Type ('Type Confusion')Base
• CWE-915Improperly Controlled Modification of Dynamically-Determined Object AttributesBase

Data version

5.1

Document digest

a15ce31b825cf764f6150dd0767d861f1f947a4092063a6f0b43229fb8cfaafc

• snyk.iohttps://snyk.io/vuln/SNYK-JS-JSONPOINTER-1577287x_refsource_MISC
• snyk.iohttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1910686x_refsource_MISC
• github.comhttps://github.com/manuelstofer/json-pointer/blob/master/index.js%23L78x_refsource_MISC