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CVE-2022-3095

Incorrect parsing of the backslash characters in Dart library

Critical9.8EPSS 1.2%
Published
Updated
Reserved
Assigned by
Google

Description

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.

Scores

CVSS scores of CVE-2022-3095, by who scored it
Scored byCVSSScoreVector
GoogleCNA (assigner)3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
1.2% · top 33% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: total
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

Affected products

  • Google LLC · Dart

    • affected stable – < 2.18.2
    • affected Flutter – < 3.3.3

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .