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CVE-2020-8923

XSS in Dart

Medium5.4EPSS 0.32%
Published
Updated
Reserved
Assigned by
Google

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.

Scores

CVSS scores of CVE-2020-8923, by who scored it
Scored byCVSSScoreVector
GoogleCNA (assigner)3.1Medium5.4CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
NVDNVD · Modified3.1Medium6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS (exploitation in 30 days)
0.32% · top 74% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.

Weakness

Affected products

  • Google · Dart SDK

    • affected stable – ≤ 2.7.1
    • affected dev – ≤ 2.8.0-dev.16.0

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .