CVE-2020-8923

XSS in Dart

Description

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.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.09%
Third-Party Advisory github.com
Affected: Google Dart SDK
Published at:
Updated at:

References

Link Tags
https://github.com/dart-lang/sdk/security/advisories/GHSA-hfq3-v9pv-p627 third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-8923?
CVE-2020-8923 has been scored as a medium severity vulnerability.
How to fix CVE-2020-8923?
To fix CVE-2020-8923, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-8923 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-8923 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-8923?
CVE-2020-8923 affects Google Dart SDK.
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