CVE-2021-22540

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

0.68% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 51.9% 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

2021-04-22 14:15Z5 YR AGO

Last updated

2024-08-03 18:44Z2 YR AGO

Reserved

2021-01-05

Assigning CNA

Google

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

f4a706a0cede72614018afcb362ac413d266d9021b2bd63e731397a4c24aee36

• github.comhttps://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522x_refsource_CONFIRM
• github.comhttps://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588x_refsource_CONFIRM