TI-2021-05505 Aliases CVE-2021-22540 GHSA-36mh-f84c-9fqq

XSS in Dart SDK

LOW 28CWE-79Published 2021-04-22 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

EPSS 0.00681 52nd percentileScored 2026-11-07

Fix Fixed Dart SDK (Google LLC): 2.12.3

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Google	Dart SDK	stable to before 2.12.3	2.12.3	Patch available	CNA

Dart SDK VendorGoogle Affected stable to before 2.12.3 Fixed in 2.12.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:dart:dart_software_development_kit::::::::	before 2.12.3	Vulnerable	Dart

cpe:2.3:a:dart:dart_software_development_kit:*:*:*:*:*:*:*:* Versions before 2.12.3 Vulnerable ·Dart

Remediation

Fix · CNA Dart SDK (Google LLC) Fixed in 2.12.3

Timeline

2026-10-02 Threatist record created from CVE-2021-22540
2026-10-03 Alias added: GHSA-36mh-f84c-9fqq

References

Patch 1

https://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588

Other 1

https://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522

TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6

See all 17247 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences