CVE-2021-23450

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

30.36% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 98.0% 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

Modified. NVD last modified this record on 2026-10-08.

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

2021-12-17 20:05Z4 YR AGO

Last updated

2026-10-08 21:13Z20 DAYS AGO

Reserved

2021-01-08

Assigning CNA

snyk

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')Variant
• CWE-915Improperly Controlled Modification of Dynamically-Determined Object AttributesBase

Data version

5.2

Document digest

4f9aa532ee20015ef577cf2643fd13954ddcfdb530b70d6bc35150d36406fd7b

• snyk.iohttps://snyk.io/vuln/SNYK-JS-DOJO-1535223
• snyk.iohttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2313033
• snyk.iohttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBDOJO-2313034
• snyk.iohttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2313035
• snyk.iohttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-2313036
• github.comhttps://github.com/dojo/dojo/blob/4c39c14349408fc8274e19b399ffc660512ed07c/_base/lang.js%23L172
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2022.html
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2022.html
• lists.debian.org[debian-lts-announce] 20230129 [SECURITY] [DLA 3289-1] dojo security updatehttps://lists.debian.org/debian-lts-announce/2023/01/msg00030.htmlmailing-list