CVE-2021-22540

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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
GoogleCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 57%
VendorProductVersion
dartdart_software_development_kit
𝑥
< 2.12.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588
https://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522
https://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588
https://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522