9.8

CVE-2022-3095: dart dart_software_development_kit Improper Input Validation

CVSS: 9.8v3.1CriticalModified
Published 27-10-2022Last modified 21-04-2025
Open JSON

Vulnerability summary

CVE-2022-3095 is a critical (CVSS 9.8) Improper Input Validation vulnerability in dart dart_software_development_kit. EPSS estimates a 0.97% chance of exploitation in the next 30 days, higher than 61.2% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.97%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 27-10-2022
    PublishedVulnerability first disclosed.
  2. 21-04-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.97%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

+0.04 pp

From 0.93% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.97%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Dart1 product
Flutter1 product
Google llc1 product
  • dart≥ stable, < 2.18.2 | ≥ Flutter, < 3.3.3

3 vendors · 3 products

References

1 links