Weakness (CWE)
CWE-319: Cleartext Transmission of Sensitive Information
The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
How to prevent it (5 mitigations)
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Architecture and Design
Before transmitting, encrypt the data using reliable, confidentiality-protecting cryptographic protocols.
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Implementation
When using web applications with SSL, use SSL for the entire session from login to logout, not just for the initial login page.
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Implementation
When designing hardware platforms, ensure that approved encryption algorithms (such as those recommended by NIST) protect paths from security critical data to trusted user applications.
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Testing
Use tools and techniques that require manual (human) analysis, such as penetration testing, threat modeling, and interactive tools that allow the tester to record and modify an active session. These may be more effective than strictly automated techniques. This is especially the case with weaknesses that are related to design and business rules.
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Operation
Configure servers to use encrypted channels for communication, which may include SSL or other secure protocols.
Source: MITRE CWE-319
652 results · Feed
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Low 2.3
Lack of traffic encryption in STER
STER uses unencrypted TCP traffic to transmit data over the network. It allows an attacker to conduct a Man-In-The-Middle attack and obtain sensitive data such as passwords, personal data, or authentication tokens. This issue was fixed in version 9.5.
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Medium 4.3
HCL AION is affected by a vulnerability where backend service details may be transmitted over insecure HTTP channels.
HCL AION is affected by a vulnerability where backend service details may be transmitted over insecure HTTP channels. This may expose sensitive information to potential interception or unauthorized access during transmission under certain conditions
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Medium 5.4
HCL AION is affected by a vulnerability where encryption is not enforced for certain data transmissions or operations
HCL AION is affected by a vulnerability where encryption is not enforced for certain data transmissions or operations. This may expose sensitive information to potential interception or unauthorized access under specific conditions.
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Medium 5.3
Foscam VD1 Video Doorbell before V5.3.13_1072 is vulnerable to Cleartext Transmission of Sensitive Information. The dev…
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Medium 4.8
Android App "あんしんフィルター for au" provided by KDDI CORPORATION contains Cleartext Transmission of Sensitive Information (C…
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Medium 5.9
connection reuse ignores TLS requirement
A vulnerability exists where a connection requiring TLS incorrectly reuses an existing unencrypted connection from the same connection pool. If an initial transfer is made in clear-text (via IMAP, SMTP, or POP3), a subsequent request to that same host bypasse…
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High 7.5
Catalyst::Plugin::Statsd versions through 0.10.0 for Perl may leak session ids
Catalyst::Plugin::Statsd versions through 0.10.0 for Perl may leak session ids. If the communication channel to the statsd daemon is not secured (for example, by sending UDP packets to a host on another network), then users' session ids may be leaked. This ma…
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Medium 5.3
Plack::Middleware::Statsd versions before 0.9.0 for Perl may leak user IP addresses
Plack::Middleware::Statsd versions before 0.9.0 for Perl may leak user IP addresses. If the communication channel to the statsd daemon is not secured (for example, by sending UDP packets to a host on another network), then users' IP addresses may be leaked. S…
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Medium 5.3
Some EZVIZ products utilize older versions of cloud feature modules with legacy API interfaces, which pose a data trans…
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Low 3.7
HCL DFXAnalytics is affected by an Insufficient Transport Layer Protection vulnerability
HCL DFXAnalytics is affected by an Insufficient Transport Layer Protection vulnerability where data is transmitted over the network without encryption, which could allow an attacker to compromise the confidentiality, integrity, and authentication of sensitive…
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Low 3.7
TRENDnet TEW-821DAP Firmware Update ssi cleartext transmission
A vulnerability has been found in TRENDnet TEW-821DAP 1.12B01. This affects an unknown function of the file /www/cgi/ssi of the component Firmware Update. Such manipulation leads to cleartext transmission of sensitive information. The attack can be executed r…
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High 8.8
Sensitive Data Exposure Vulnerability in e-Sushrut HMIS
This vulnerability exists in e-Sushrut due to exposure of OTPs in plaintext within API responses. A remote attacker could exploit this vulnerability by intercepting API responses containing valid OTPs. Successful exploitation of this vulnerability could allow…
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Medium 5.3
SenseLive X3050 Cleartext transmission of sensitive information
A vulnerability exists in SenseLive X3050’s web management interface due to its reliance on unencrypted HTTP for all administrative communication. Because management traffic, including authentication attempts and configuration data, is transmitted in cleartex…
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High 7.5
Flowise: Password Reset Link Sent Over Unsecured HTTP
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the password reset functionality on cloud.flowiseai.com sends a reset password link over the unsecured HTTP protocol instead of HTTPS. This behavior intro…
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Medium 5.3
HCL BigFix Service Management (SM) Discovery is vulnerable to unenforced encryption
HCL BigFix Service Management (SM) Discovery is vulnerable to unenforced encryption due to port 80 (HTTP) being open, allowing unencrypted access. An attacker with access to the network traffic can sniff packets from the connection and uncover the data.
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Medium 5.7
OpenClaw < 2026.4.2 - Cleartext Credential Transmission via Unencrypted WebSocket Gateway Endpoints
OpenClaw before 2026.4.2 accepts non-loopback cleartext ws:// gateway endpoints and transmits stored gateway credentials over unencrypted connections. Attackers can forge discovery results or craft setup codes to redirect clients to malicious endpoints, discl…
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High 7.1
Unencrypted Client‑Server Communication in ConnectWise Automate™ Solution Center
ConnectWise has released a security update for ConnectWise Automate™ that addresses a behavior in the ConnectWise Automate Solution Center where certain client-to-server communications could occur without transport-layer encryption. This could allow network‑b…
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Medium 6.5
Anviz Products Cleartext Transmission of Sensitive Information
Anviz CX2 Lite and CX7 administrative sessions occur over HTTP, enabling on‑path attackers to sniff credentials and session data, which can be used to compromise the device.
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Medium 4.8
Cryptomator Hub OAuth token exchange HTTP downgrade via getAuthority() scheme confusion (CVE-2026-32303 bypass)
Cryptomator is an open-source client-side encryption application for cloud storage. Version 1.19.1 contains a logic flaw in CheckHostTrustController.getAuthority() that allows an attacker to bypass the security fix for CVE-2026-32303. The method hardcodes the…
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Medium 5.4
A cleartext transmission of sensitive information vulnerability in Fortinet FortiSOAR PaaS 7.6.0 through 7.6.3, FortiSO…
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Medium 6.2
A cleartext transmission of sensitive information vulnerability in Fortinet FortiSOAR PaaS 7.6.0 through 7.6.3, FortiSO…
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High 7.5
Apache APISIX: Openid-connect `tls_verify` field is disabled by default
Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX. This can occur due to `ssl_verify` in openid-connect plugin configuration being set to false by default. This issue affects Apache APISIX: from 0.7 through 3.15.0. Users are recom…
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Medium 5.3
Apache APISIX: Plugin tencent-cloud-cls log export uses plaintext HTTP
Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX. tencent-cloud-cls log export uses plaintext HTTP This issue affects Apache APISIX: from 2.99.0 through 3.15.0. Users are recommended to upgrade to version 3.16.0, which fixes the …
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Low 3.6
Session hijacking in PaperCut NG/MF embedded application for Konica Minolta devices
The PaperCut NG/MF (specifically, the embedded application for Konica Minolta devices) is vulnerable to session hijacking. The PaperCut NG/MF Embedded application is a software interface that runs directly on the touch screen of a multi-function device. It wa…
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Medium 5.9
Libsoup: libsoup: information disclosure via cleartext transmission of cookies during https tunnel establishment
A flaw was found in libsoup. When establishing HTTPS tunnels through a configured HTTP proxy, sensitive session cookies are transmitted in cleartext within the initial HTTP CONNECT request. A network-positioned attacker or a malicious HTTP proxy can intercept…
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Medium 6.5
IBM InfoSphere Information Server is vulnerable due to disclosure of sensitive information
IBM InfoSphere Information Server 11.7.0.0 through 11.7.1.6 is vulnerable to exposure of sensitive information via JSON server response manipulation.
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Medium 5.9
Multiple Vulnerabilities in IBM Concert Software
IBM Concert 1.0.0 through 2.2.0 transmits data in clear text that could allow an attacker to obtain sensitive information using man in the middle techniques.
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Medium 6.1
A vulnerability in Cisco IOS XE Software for Cisco Meraki could allow a remote, unauthenticated attacker to view confid…
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Low 3.1
Shenzhen HCC Technology MPOS M6 PLUS Cardholder Data cleartext transmission
A flaw has been found in Shenzhen HCC Technology MPOS M6 PLUS 1V.31-N. This affects an unknown part of the component Cardholder Data Handler. Executing a manipulation can lead to cleartext transmission of sensitive information. The attack requires access to t…
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Critical 9.1
Automated Logic WebCTRL Premium Server Cleartext Transmission of Sensitive Information
Service information is not encrypted when transmitted as BACnet packets over the wire, and can be sniffed, intercepted, and modified by an attacker. Valuable information such as the File Start Position and File Data can be sniffed from network traffic using W…
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High 8.7
Cryptomator: Hub unlocking accepts plaintext HTTP and unvalidated endpoint schemes
Cryptomator encrypts data being stored on cloud infrastructure. Prior to version 1.19.1, the Hub-based unlock flow explicitly supports hub+http and consumes Hub endpoints from vault metadata without enforcing HTTPS. As a result, a vault configuration can driv…
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High 8.1
OpenClaw < 2026.2.21 - Insecure Control UI Authentication over Plaintext HTTP
OpenClaw versions prior to 2026.2.21 contain an authentication bypass vulnerability in the Control UI when allowInsecureAuth is explicitly enabled and the gateway is exposed over plaintext HTTP, allowing attackers to bypass device identity and pairing verific…
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High 7.5
Edimax GS-5008PL <= 1.00.54 Transmits Credentials Over Cleartext HTTP
Edimax GS-5008PL firmware version 1.00.54 and prior use cleartext HTTP for the web management interface without implementing TLS or SSL encryption. Attackers on the same network can intercept management traffic to capture administrator credentials and sensiti…
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Low 3.7
IBM Sterling Partner Engagement Manager Information Disclosure
IBM Sterling Partner Engagement Manager 6.2.3.0 through 6.2.3.5 and 6.2.4.0 through 6.2.4.2 could allow a remote attacker to obtain sensitive information in cleartext in a communication channel that can be sniffed by unauthorized actors.
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High 7.5
Azure IoT Explorer Information Disclosure Vulnerability
Missing authentication for critical function in Azure IoT Explorer allows an unauthorized attacker to disclose information over a network.
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High 7.5
Azure IoT Explorer Information Disclosure Vulnerability
Cleartext transmission of sensitive information in Azure IoT Explorer allows an unauthorized attacker to disclose information over a network.
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High 7.5
An issue pertaining to CWE-319: Cleartext Transmission of Sensitive Information was discovered in Nexusoft NexusInterfa…
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Low 3.1
Mendi Neurofeedback Headset Bluetooth Low Energy cleartext transmission
A vulnerability was detected in Mendi Neurofeedback Headset V4. Affected by this vulnerability is an unknown functionality of the component Bluetooth Low Energy Handler. Performing a manipulation results in cleartext transmission of sensitive information. The…
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High 8.7
RustDesk HTTP Client Silently Accepts Invalid TLS Certificates After Handshake Failure
Cleartext Transmission of Sensitive Information vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android (Heartbeat sync loop modules) allows Sniffing Attacks. This vulnerability is associated with program files …
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Critical 9.6
A lack of authentication and authorization mechanisms in the Bluetooth Low Energy (BLE) communication protocol of SRK P…