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CWE-940

Improper Verification of Source of a Communication Channel

The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin.

55
Assigned CVEs
228th
Commonality Rank
7.0
Avg CVSS
1.8%
In CISA KEV

Volume and Severity of Assigned CVEs Over Time

Volume of CVEs assigned to CWE-940 and their average CVSS base score over time.

Volume of CVEsAvg CVSS Base Score
First CVE
Nov 10, 2021
4 years ago
Most Recent CVE
Jul 1, 2026
23 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.

55 CVEs · Highest risk first

CVEPublishedCVSSRiskKEVExploit
CVE-2025-61932CRITICAL
Lanscope Endpoint Manager (On-Premises) (Client program (MR) and Detection agent (DA)) improperly verifies the origin of incoming requests, allowing an attacker to execute arbitrar
Oct 20, 20259.876YESNO
CVE-2026-6734HIGH
Impact: When using Socks5ProxyAgent, undici reuses a single connection pool across different origins without verifying that the pool's origin matches the requested origin. All requ
Jun 17, 20268.838NONO
CVE-2026-2611CRITICAL
In MLflow version 3.9.0, the MLflow Assistant feature introduced improper origin validation in its /ajax-api endpoints. This vulnerability allows a remote attacker to exploit cross
May 19, 20269.637NONO
CVE-2026-44698HIGH
Home Assistant is open source home automation software that puts local control and privacy first. Prior to 2026.4.1 for iOS and 2026.4.4 for Android, he Home Assistant Companion ap
May 29, 20268.335NONO
CVE-2026-48745CRITICAL
Traccar Client is a GPS tracking mobile app for sending location updates to private servers using the open-source Traccar platform. In versions 9.7.19 and below, a single crafted d
Jun 16, 20269.334NONO
CVE-2026-55660HIGH
Tina is a headless content management system. In versions prior to @tinacms/app 2.5.6 and tinacms 3.9.3, cross-origin postMessage handlers and a rich-text URL-sanitization bypass e
Jul 1, 20267.632NONO
CVE-2026-44894HIGH
Netty is a network application framework for development of protocol servers and clients. NoQuicTokenHandler is the tokenHandler used when the application does not set one. Prior t
Jun 12, 20267.532NONO
CVE-2026-33875CRITICAL
Gematik Authenticator securely authenticates users for login to digital health applications. Versions prior to 4.16.0 are vulnerable to authentication flow hijacking, potentially a
Mar 27, 20269.332NONO
CVE-2025-59159CRITICAL
SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice model
Oct 6, 20259.632NONO
CVE-2026-45245HIGH
Summarize prior to 0.15.1 contains a vulnerability in the hover summary feature that allows malicious pages to dispatch synthetic mouseover events over attacker-controlled links, c
May 18, 20267.431NONO
View all 55 CVEs →

CVE Severity & Scoring

This CWEGlobal (All CVEs)
0.0-0.9
1.0-1.9
2.0-2.9
3.0-3.9
13%
10%
4.0-4.9
13%
19%
5.0-5.9
16%
16%
6.0-6.9
22%
26%
7.0-7.9
15%
11%
8.0-8.9
16%
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
1 CVE
1.8% of CVEs· 94th percentile
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