Common Weakness Enumeration
CWE-940
AllowedImproper Verification of Source of a Communication Channel
Abstraction: Base · Status: Incomplete
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.
120 vulnerabilities reference this CWE, most recent first.
CVE-2026-112408 (GCVE-0-2026-112408)
Vulnerability from cvelistv5 – Published: 2026-10-21 19:36 – Updated: 2026-10-21 19:47
VLAI
EPSS
VEX
Title
Missing bucket ownership verification in Amazon SageMaker Python SDK default_bucket()
Summary
Missing verification of source of a communication channel in the default_bucket() function in Amazon SageMaker Python SDK V3 before 3.10.0 and V2 before 2.257.3 might allow remote actors to achieve code execution in the target SageMaker execution environment and obtain IAM credentials via pre-creation of a predictably named S3 bucket that the SDK uses without ownership validation.
To remediate this issue, users should upgrade to Amazon SageMaker Python SDK 3.10.0 (V3) or 2.257.3 (V2).
Severity
8.1 (High)
CWE
- CWE-940 - Improper verification of source of a communication channel
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/aws/sagemaker-python-sdk/relea… | release-notespatch |
| https://github.com/aws/sagemaker-python-sdk/relea… | release-notespatch |
| https://pypi.org/project/sagemaker/3.10.0/ | release-notespatch |
| https://pypi.org/project/sagemaker/2.257.3/ | release-notespatch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/aws/sagemaker-python-sdk/secur… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | Amazon SageMaker Python SDK |
Affected:
0 , < 2.257.3
(custom)
Affected: 3.0.0 , < 3.10.0 (custom) cpe:2.3:a:aws:amazon_sagemaker_python_sdk:*:*:*:*:*:*:*:* cpe:2.3:a:aws:amazon_sagemaker_python_sdk:*:*:*:*:*:*:*:* |
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CVE-2026-102552 (GCVE-0-2026-102552)
Vulnerability from cvelistv5 – Published: 2026-10-16 17:28 – Updated: 2026-10-19 12:54
VLAI
EPSS
VEX
Title
Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP DNS resolver
Summary
Improper verification of the source of a communication channel in the DNS resolver in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow remote third-party to insert a chosen address into the device's DNS cache via a forged DNS reply.
To remediate this issue, users should upgrade to version V4.4.2 and enable ipconfigDNS_CHECK_REPLY_SOURCE_IP.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 12:51 UTC
CWE
- CWE-940 - Improper verification of source of a communication channel
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/rel… | release-notespatch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/sec… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FreeRTOS | FreeRTOS-Plus-TCP |
Affected:
0 , ≤ 4.4.1
(custom)
cpe:2.3:a:freertos:freertos-plus-tcp:*:*:*:*:*:*:*:* |
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CVE-2026-102551 (GCVE-0-2026-102551)
Vulnerability from cvelistv5 – Published: 2026-10-16 17:27 – Updated: 2026-10-19 12:51
VLAI
EPSS
VEX
Title
Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handling
Summary
Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router Advertisement.
To remediate this issue, users should upgrade to version V4.4.2.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 12:50 UTC
CWE
- CWE-940 - Improper verification of source of a communication channel
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/rel… | release-notespatch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/sec… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FreeRTOS | FreeRTOS-Plus-TCP |
Affected:
0 , ≤ 4.4.1
(custom)
cpe:2.3:a:freertos:freertos-plus-tcp:*:*:*:*:*:*:*:* |
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CVE-2026-102511 (GCVE-0-2026-102511)
Vulnerability from cvelistv5 – Published: 2026-09-30 08:03 – Updated: 2026-09-30 16:43
VLAI
EPSS
VEX
Title
Apache PLC4X, Apache PLC4X, Apache PLC4X, Apache PLC4X: ADS discovery accepts spoofed responses and derives the connection target from them
Summary
Improper Verification of Source of a Communication Channel in the ADS discovery of the Go implementation of Apache PLC4X (PLC4Go) allows an attacker able to send UDP datagrams to the discovering host to redirect subsequent connections to an arbitrary, attacker-chosen address. The discovery result's connection
address was derived from the AmsNetId claimed in the response body rather than from the datagram's actual source address. One spoofed discovery response can therefore insert an inventory entry pointing at any host, including hosts outside the local network, and an application that connects to discovered devices
will open its ADS session, including any configured route credentials, to that host.
Additionally, discovery listeners in both implementations can be disabled by a single malformed datagram:
- In PLC4Go ADS discovery, a short version block causes a panic that ends the listener for the rest of the discovery call, so legitimate devices answering afterwards are not reported.
- In PLC4J, the ADS and EtherNet/IP discoverers stop on an unhandled exception from a malformed response.
- The PLC4J Modbus discoverer can be made to spin indefinitely, consuming a CPU core, by a scanned host that sends a partial response.
Exploitation requires the application to invoke the discovery API, which is opt-in, and for the connection redirect, to act on the discovered items.
This issue affects Apache PLC4X: PLC4Go from 0.11.0 before 1.0.0; PLC4J ADS and Modbus drivers from 0.10.0 before 1.0.0; PLC4J EtherNet/IP driver from 0.11.0 before 1.0.0. PLC4Go is consumed as the Go module github.com/apache/plc4x/plc4go; versions refer to the corresponding Apache PLC4X releases.
Users are recommended to upgrade to version 1.0.0, which fixes the issue. Version 1.0.0 derives the connection address from the datagram's source address and logs a warning when the claimed AmsNetId disagrees with it.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 16:43 UTC
CWE
Assigner
References
2 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache PLC4X |
Affected:
0.11.0 , < 1.0.0
(semver)
Unaffected: 1.0.0 (semver) |
|
| Apache Software Foundation | Apache PLC4X |
Affected:
0.10.0 , < 1.0.0
(semver)
Unaffected: 1.0.0 (semver) |
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CVE-2026-102117 (GCVE-0-2026-102117)
Vulnerability from cvelistv5 – Published: 2026-09-30 20:19 – Updated: 2026-10-01 13:37
VLAI
EPSS
VEX
Title
Kiteworks Core Remote Code Execution
Summary
On deployments where the remote-support capability is licensed and enabled, an authenticated System Administrator who also possessed the key protecting the submitted data could redirect the underlying system's outbound support connection to a destination of their choosing. That destination could then have operating-system commands executed on the node and receive their output, potentially resulting in remote code execution with the privileges of a local service account.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:27 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kiteworks/security-advisories/… | vendor-advisory |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
Impacted products
Date Public
2026-09-30 00:00
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CVE-2026-101897 (GCVE-0-2026-101897)
Vulnerability from cvelistv5 – Published: 2026-10-14 15:03 – Updated: 2026-10-14 15:03
VLAI
EPSS
VEX
Title
Angular DevTools (Local DoS)
Summary
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. From 1.20.0 until 1.21.1, the Angular DevTools background service worker accepts chrome.runtime.sendMessage runtime messages from untrusted web pages or third-party content scripts without adequately verifying the message source. An untrusted sender that obtains a valid randomized victim tabId can direct the extension to use chrome.debugger to attach to another browser tab and trigger Chrome DevTools Protocol breakpoints. This can display the debugging banner, pause JavaScript execution, and prevent interaction with the target tab, but it does not provide remote code execution, privilege escalation, or cross-origin access to memory or credentials. This issue is fixed in version 1.21.1.
Severity
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/angular/angular/security/advis… | x_refsource_CONFIRM |
| https://github.com/angular/angular/pull/70623 | x_refsource_MISC |
| https://github.com/angular/angular/commit/7c05359… | x_refsource_MISC |
| https://github.com/angular/angular/commit/cf492e8… | x_refsource_MISC |
| https://github.com/angular/angular/commit/e02c4d8… | x_refsource_MISC |
Impacted products
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CVE-2026-94590 (GCVE-0-2026-94590)
Vulnerability from cvelistv5 – Published: 2026-10-10 18:45 – Updated: 2026-10-11 12:13 X_Open Source
VLAI
EPSS
VEX
Title
WordPress Sell Downloads plugin <= 1.2.3 - Broken Access Control vulnerability
Summary
Improper Verification of Source of a Communication Channel vulnerability in CodePeople2 Sell Downloads sell-downloads allows Exploitation of Trusted Credentials.This issue affects Sell Downloads: from n/a through 1.2.3.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-11 12:02 UTC
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| CodePeople2 | Sell Downloads |
Affected:
0 , ≤ 1.2.3
(custom)
|
Date Public
2026-10-08 10:38
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CVE-2026-89409 (GCVE-0-2026-89409)
Vulnerability from cvelistv5 – Published: 2026-10-22 13:50 – Updated: 2026-10-22 19:00
VLAI
EPSS
VEX
Title
Unvalidated ZWAVE_CMD_NODES_EXIST May Cause Deletion of End Nodes
Summary
In Z-Wave SDK 8.1.1 and earlier (for 700/800 series devices) and 6.85.02 and earlier (for 500 series devices), missing checks in the ZWAVE_CMD_NODES_EXIST handler can result in nodes being removed from the network. These messages must come from a device that has already joined the network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-22 18:26 UTC
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/SiliconLabsSoftware/docs-secur… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Silicon Labs | Z-Wave SDK |
Affected:
7.0.0 , ≤ 8.1.1
(semver)
Affected: 0 , ≤ 6.85.02 (semver) |
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CVE-2026-89178 (GCVE-0-2026-89178)
Vulnerability from cvelistv5 – Published: 2026-09-11 07:36 – Updated: 2026-09-11 15:31
VLAI
EPSS
VEX
Title
Howyar｜WeenyGenius - Origin Validation Error
Summary
WeenyGenius, a computer lab management system by Howyar Technologies, has an Origin Validation Error vulnerability. Unauthenticated attackers on the same network can spoof the teacher workstation and send broadcast packets, causing student computers to attempt to establish a connection with the attacker.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 15:30 UTC
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.twcert.org.tw/tw/cp-132-11201-658c0-1.html | third-party-advisory |
| https://www.twcert.org.tw/en/cp-139-11200-ffc3c-2.html | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Howyar | WeenyGenius |
Affected:
0 , ≤ 12.2.031
(custom)
|
Date Public
2026-09-11 07:36
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CVE-2026-87705 (GCVE-0-2026-87705)
Vulnerability from cvelistv5 – Published: 2026-10-13 19:01 – Updated: 2026-10-27 21:33
VLAI
EPSS
VEX
Title
Windows Hyper-V Security Feature Bypass Vulnerability
Summary
Improper verification of source of a communication channel in Windows Hyper-V allows an unauthorized attacker to bypass a security feature over an adjacent network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 20:00 UTC
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
21 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7807
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7807
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9711
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9711
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.3231
(custom)
|
|
| Microsoft | Windows 11 Version 26H2 |
Affected:
10.0.26300.0 , < 10.0.26300.9711
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5761
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
Date Public
2026-10-13 14:00
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Mitigation
Architecture and Design
- Use a mechanism that can validate the identity of the source, such as a certificate, and validate the integrity of data to ensure that it cannot be modified in transit using an Adversary-in-the-Middle (AITM) attack.
- When designing functionality of actions in the URL scheme, consider whether the action should be accessible to all mobile applications, or if an allowlist of applications to interface with is appropriate.
CAPEC-500: WebView Injection
An adversary, through a previously installed malicious application, injects code into the context of a web page displayed by a WebView component. Through the injected code, an adversary is able to manipulate the DOM tree and cookies of the page, expose sensitive information, and can launch attacks against the web application from within the web page.
CAPEC-594: Traffic Injection
An adversary injects traffic into the target's network connection. The adversary is therefore able to degrade or disrupt the connection, and potentially modify the content. This is not a flooding attack, as the adversary is not focusing on exhausting resources. Instead, the adversary is crafting a specific input to affect the system in a particular way.
CAPEC-595: Connection Reset
In this attack pattern, an adversary injects a connection reset packet to one or both ends of a target's connection. The attacker is therefore able to have the target and/or the destination server sever the connection without having to directly filter the traffic between them.
CAPEC-596: TCP RST Injection
An adversary injects one or more TCP RST packets to a target after the target has made a HTTP GET request. The goal of this attack is to have the target and/or destination web server terminate the TCP connection.