CVE-2021-42357

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

2.57% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 84.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2022-01-17 19:25Z4 YR AGO

Last updated

2024-08-04 03:30Z2 YR AGO

Reserved

2021-10-14

Assigning CNA

apache

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.1

Document digest

a3c3e7f0218317919c710929c41f30867fff1af2b35a38236ab78ef402e86d22

• lists.apache.orghttps://lists.apache.org/thread/b7v5dkpyqb51nw0lvz4cybhgrfhk1g7jx_refsource_MISC
• www.openwall.com[oss-security] 20220117 CVE-2021-42357: DOM based XSS Vulnerability in Apache Knoxhttp://www.openwall.com/lists/oss-security/2022/01/17/2mailing-listx_refsource_MLIST