Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-8923
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 11:31 UTC · Revision 1
Source evidence
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.
osv:CVE-2020-8923
Complete source record
{
"id": "f2b95eba86335f15fb8aca41af94d2e05610e320ce98e5d5a9a002064afa7f8c",
"url": "https://osv.dev/vulnerability/CVE-2020-8923",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-8923",
"summary": "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.",
"evidence": "osv:CVE-2020-8923",
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"GHSA-hfq3-v9pv-p627"
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"modified": "2026-10-20T10:54:25.803720392Z",
"provider": "osv",
"references": [
"https://github.com/dart-lang/sdk/security/advisories/GHSA-hfq3-v9pv-p627"
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"source_id": "core-osv",
"document_id": 385356,
"published_at": "2020-03-26T12:15:12.217+00:00"
}