What is CVE-2020-8923?

CVE-2020-8923 is a medium-severity vulnerability in Dart Software Development Kit, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-03-26.

How severe is CVE-2020-8923?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Dart Software Development Kit

CVE-2020-8923

An improper HTML sanitization in Dart versions up to and including 2.7.1 and dev versions 2.8.0-dev.16.0, allows an attacker leveraging DOM Clobbering techniques to skip the sanitization and inject custom html/javascript (XSS). Mitigation: update your Dart SDK to 2.7.2, and 2.8.0-dev.17.0 for the dev version. If you cannot update, we recommend you review the way you use the affected APIs, and pay special attention to cases where user-provided data is used to populate DOM nodes. Consider using Element.innerText or Node.text to populate DOM elements.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (24.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Dart Dart_software_development_kit — versions 2.8.0
Google Dart Sdk — versions stable, dev

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve-coordination@google.com (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2020-8923?: CVE-2020-8923 is a medium-severity vulnerability in Dart Software Development Kit, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-03-26.
How severe is CVE-2020-8923?: Medium severity. CVSS v3 base score is 5.4 out of 10.