CVE-2021-3693

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

3.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 87.6% of scored records. A rank, not a probability.

NVD base score

9.6 (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:H/I:H/A:H

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

2021-08-23 12:41Z5 YR AGO

Last updated

2024-08-03 17:01Z2 YR AGO

Reserved

2021-08-09

Assigning CNA

@huntrdev

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

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

Data version

5.1

Document digest

9c88151c07b4997d2d851e96a536dd638945e0c28b791c7e252bd0480af0085d

• huntr.devhttps://huntr.dev/bounties/daf1384d-648a-43fd-9b35-5c37d8ead667x_refsource_CONFIRM
• ledgersmb.orghttps://ledgersmb.org/cve-2021-3693-cross-site-scriptingx_refsource_MISC
• www.debian.orgDSA-4962https://www.debian.org/security/2021/dsa-4962vendor-advisoryx_refsource_DEBIAN