CVE-2021-31330

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

0.81% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 54.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/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

2022-05-11 17:34Z4 YR AGO

Last updated

2024-08-03 22:55Z2 YR AGO

Reserved

2021-04-15

Assigning CNA

mitre

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

39beb196c2b645400d3381415b89cfe283a9a742e247aa25a30f843eda0b1e60

• mattschmidt.nethttps://mattschmidt.net/2021/04/14/review-board-xss-discovered/x_refsource_MISC
• www.reviewboard.orghttps://www.reviewboard.org/news/2021/04/14/review-board-3-0-21-and-4-0-rc-2-security-bug-fixes-and-docker/x_refsource_MISC
• www.reviewboard.orghttps://www.reviewboard.org/docs/releasenotes/reviewboard/3.0.21/x_refsource_MISC
• www.reviewboard.orghttps://www.reviewboard.org/docs/releasenotes/reviewboard/4.0-rc-2/x_refsource_MISC