CVE-2021-31164

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

2.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 82.6% of scored records. A rank, not a probability.

NVD base score

7.5 (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:N/I:H/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

2021-05-04 06:55Z5 YR AGO

Last updated

2024-08-03 22:55Z2 YR AGO

Reserved

2021-04-14

Assigning CNA

apache

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection')Base
• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class

Data version

5.1

Document digest

df1442cb9cd4a65ded1598762ccfeb468e72bdff5750e92204ab20c330292710

• unomi.apache.orghttp://unomi.apache.org/security/cve-2021-31164x_refsource_MISC