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TI-2022-02856 Aliases CVE-2022-3095

Incorrect parsing of the backslash characters in Dart library

Priority MEDIUM 51CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

The implementation of backslash parsing in the Dart URI class for versions prior to 2.18 and Flutter versions prior to 3.30 differs from the WhatWG URL standards. Dart uses the RFC 3986 syntax, which creates incompatibilities with the '\' characters in URIs, which can lead to auth bypass in webapps interpreting URIs. We recommend updating Dart or Flutter to mitigate the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01164 67th percentileScored 2026-11-07
Fix Fixed Dart (Google LLC): 2.18.2, 3.3.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GoogleDartstable to before 2.18.2; Flutter to before 3.3.32.18.2, 3.3.3Patch availableCNA
  • Dart VendorGoogle Affected stable to before 2.18.2; Flutter to before 3.3.3 Fixed in 2.18.2, 3.3.3 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:dart:dart_software_development_kit:*:*:*:*:*:*:*:*before 2.18.0VulnerableDart
cpe:2.3:a:flutter:flutter:*:*:*:*:*:*:*:*before 3.3.3VulnerableFlutter
  • cpe:2.3:a:dart:dart_software_development_kit:*:*:*:*:*:*:*:* Versions before 2.18.0 Vulnerable ·Dart
  • cpe:2.3:a:flutter:flutter:*:*:*:*:*:*:*:* Versions before 3.3.3 Vulnerable ·Flutter

Remediation

  • Fix · CNA Dart (Google LLC) Fixed in 2.18.2, 3.3.3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-3095

References

Advisory 1

  • 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