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CWE-939

Improper Authorization in Handler for Custom URL Scheme

The product uses a handler for a custom URL scheme, but it does not properly restrict which actors can invoke the handler using the scheme.

24
Assigned CVEs
311th
Commonality Rank
6.1
Avg CVSS
0.0%
In CISA KEV

Volume and Severity of Assigned CVEs Over Time

Volume of CVEs assigned to CWE-939 and their average CVSS base score over time.

Volume of CVEsAvg CVSS Base Score
First CVE
Apr 8, 2020
6 years ago
Most Recent CVE
Jun 14, 2026
40 days ago

Top CVEs Assigned This CWE

Top CVEs that have been assigned this CWE. A single CVE can have multiple CWE assignments, though many have just one.

24 CVEs · Highest risk first

CVEPublishedCVSSRiskKEVExploit
CVE-2026-53407CRITICAL
Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version 7.0.4 for Android and before 7.0.3 for iOS may allow an unauthenticated user to conduct an
Jun 12, 20269.839NONO
CVE-2026-6445HIGH
A flaw exists in FlashArray Purity where insufficient filtering of certain data paths could expose sensitive information to an authenticated user with low privileges.
Jun 9, 20268.733NONO
CVE-2026-53408HIGH
Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version 7.0.4 for Android and before 7.0.3 for iOS may allow an unauthenticated user to conduct an
Jun 12, 20268.132NONO
CVE-2021-31384CRITICAL
Due to a Missing Authorization weakness and Insufficient Granularity of Access Control in a specific device configuration, a vulnerability exists in Juniper Networks Junos OS on SR
Oct 19, 202110.031NONO
CVE-2026-35394HIGH
Mobile Next is an MCP server for mobile development and automation. Prior to 0.0.50, the mobile_open_url tool in mobile-mcp passes user-supplied URLs directly to Android's intent s
Apr 6, 20268.830NONO
CVE-2026-12190MEDIUM
A vulnerability has been found in Genspark AI Workspace App 2.8.4 on Android. This vulnerability affects unknown code of the component ai.mainfunc.genspark. The manipulation leads
Jun 14, 20265.325NONO
CVE-2026-12189MEDIUM
A flaw has been found in Moovit Bus & Public Transit App 1.18 on Android. This affects an unknown part of the component com.tranzmate. Executing a manipulation can lead to improper
Jun 14, 20265.325NONO
CVE-2026-3471MEDIUM
Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading in a pop-up window in the Mattermost Desktop App which allows a malicious server ow
May 18, 20266.525NONO
CVE-2026-33335HIGH
Vikunja is an open-source self-hosted task management platform. Starting in version 0.21.0 and prior to version 2.2.0, the Vikunja Desktop Electron wrapper passes URLs from `window
Mar 24, 20268.025NONO
CVE-2024-33606HIGH
An attacker could retrieve sensitive files (medical images) as well as plant new medical images or overwrite existing medical images on a MicroDicom DICOM Viewer system. User inter
Jun 11, 20248.825NONO
View all 24 CVEs →

CVE Severity & Scoring

This CWEGlobal (All CVEs)
0.0-0.9
1.0-1.9
2.0-2.9
13%
3.0-3.9
17%
10%
4.0-4.9
17%
19%
5.0-5.9
17%
16%
6.0-6.9
26%
7.0-7.9
25%
11%
8.0-8.9
8%
14%
9.0-10.0
unknown
CVSS Score Range

Exploit Exposure

Exploit activity across CVEs assigned to this CWE, including CVEs that carry other CWE assignments.

CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%

Social Chatter

Social posts that mention CVE IDs assigned to this CWE. This is assigned-CVE activity, not mentions of the CWE label itself.

Media Mentions

Media articles that mention CVE IDs assigned to this CWE. This is assigned-CVE coverage, not mentions of the CWE label itself.

Top Affected Vendors

Top Affected Products