CVE-2022-3095

Name: CVE-2022-3095
Creator: NVD / NIST
Published: 2022-10-27T16:15:09.6+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.87%

Last modified Jun 17, 2026

CVE-2022-3095 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.87%

54.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Dart	Dart Software Development Kit	< 2.18.0
Flutter	Flutter	< 3.3.3

References

https://github.com/dart-lang/sdk/blob/master/CHANGELOG.md#2182---2022-09-28Release Notes, Third Party Advisory
https://github.com/dart-lang/sdk/blob/master/CHANGELOG.md#2182---2022-09-28Release Notes, Third Party Advisory

Timeline

Published: Oct 27, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-3095?

How severe is CVE-2022-3095?

CVE-2022-3095 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.

How do I fix CVE-2022-3095?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-3095?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST