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VULNERABILITIES

CVE-2021-22540 Details

Description

Bad validation logic in the Dart SDK versions prior to 2.12.3 allow an attacker to use an XSS attack via DOM clobbering. The validation logic in dart:html for creating DOM nodes from text did not sanitize properly when it came across template tags.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588 CVEPatchThird Party Advisory
https://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522 CVEBroken Link
https://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588 [email protected]PatchThird Party Advisory
https://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522 [email protected]Broken Link

Weakness Enumeration

CWE-IDCWE NameSource
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]

Affected Products

ProductVersions
dart dart software development kit
< 2.12.3

CPE

  • cpe:2.3:a:dart:dart_software_development_kit:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-22540
NVD Published Date:
Apr 22, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]