CWE-319
AllowedCleartext Transmission of Sensitive Information
Abstraction: Base · Status: Draft
The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
1272 vulnerabilities reference this CWE, most recent first.
GHSA-84HR-V5JV-XW58
Vulnerability from github – Published: 2026-09-09 03:30 – Updated: 2026-09-10 18:31Cleartext transmission of sensitive data in HttpsUpgrades in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker to leak sensitive information via crafted network traffic. (Chromium security severity: Medium)
{
"affected": [],
"aliases": [
"CVE-2026-87482"
],
"database_specific": {
"cwe_ids": [
"CWE-319"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-09T01:17:04Z",
"severity": "MODERATE"
},
"details": "Cleartext transmission of sensitive data in HttpsUpgrades in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker to leak sensitive information via crafted network traffic. (Chromium security severity: Medium)",
"id": "GHSA-84hr-v5jv-xw58",
"modified": "2026-09-10T18:31:38Z",
"published": "2026-09-09T03:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87482"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/503736006"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-84PP-FP9R-5535
Vulnerability from github – Published: 2026-01-29 09:31 – Updated: 2026-01-29 09:31A vulnerability in TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an attacker on the adjacent network to cause normally encrypted UDP traffic to be sent in cleartext. This can result in disclosure of sensitive information.
{
"affected": [],
"aliases": [
"CVE-2026-23564"
],
"database_specific": {
"cwe_ids": [
"CWE-319"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-29T09:16:03Z",
"severity": "MODERATE"
},
"details": "A vulnerability in TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an attacker on the adjacent network to cause normally encrypted UDP traffic to be sent in cleartext. This can result in disclosure of sensitive information.",
"id": "GHSA-84pp-fp9r-5535",
"modified": "2026-01-29T09:31:50Z",
"published": "2026-01-29T09:31:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23564"
},
{
"type": "WEB",
"url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-855X-QR5W-6PWV
Vulnerability from github – Published: 2022-11-23 18:30 – Updated: 2022-11-28 18:30The application fails to prevent users from connecting to it over unencrypted connections. An attacker able to modify a legitimate user's network traffic could bypass the application's use of SSL/TLS encryption and use the application as a platform for attacks against its users.
{
"affected": [],
"aliases": [
"CVE-2021-35246"
],
"database_specific": {
"cwe_ids": [
"CWE-319",
"CWE-838"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-23T17:15:00Z",
"severity": "MODERATE"
},
"details": "The application fails to prevent users from connecting to it over unencrypted connections. An attacker able to modify a legitimate user\u0027s network traffic could bypass the application\u0027s use of SSL/TLS encryption and use the application as a platform for attacks against its users.",
"id": "GHSA-855x-qr5w-6pwv",
"modified": "2022-11-28T18:30:16Z",
"published": "2022-11-23T18:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-35246"
},
{
"type": "WEB",
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35246"
},
{
"type": "WEB",
"url": "https://documentation.solarwinds.com/en/success_center/ets/content/release_notes/ets_2022-4_release_notes.htm"
},
{
"type": "WEB",
"url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2021-35246"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-85QR-GGVX-PGJX
Vulnerability from github – Published: 2023-12-01 00:31 – Updated: 2025-11-04 21:30LOYTEC electronics GmbH LINX Configurator 7.4.10 uses HTTP Basic Authentication, which transmits usernames and passwords in base64-encoded cleartext and allows remote attackers to steal the password and gain full control of Loytec device configuration.
{
"affected": [],
"aliases": [
"CVE-2023-46383"
],
"database_specific": {
"cwe_ids": [
"CWE-319"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-11-30T23:15:07Z",
"severity": "HIGH"
},
"details": "LOYTEC electronics GmbH LINX Configurator 7.4.10 uses HTTP Basic Authentication, which transmits usernames and passwords in base64-encoded cleartext and allows remote attackers to steal the password and gain full control of Loytec device configuration.",
"id": "GHSA-85qr-ggvx-pgjx",
"modified": "2025-11-04T21:30:49Z",
"published": "2023-12-01T00:31:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-46383"
},
{
"type": "WEB",
"url": "https://packetstormsecurity.com/files/175951/Loytec-LINX-Configurator-7.4.10-Insecure-Transit-Cleartext-Secrets.html"
},
{
"type": "WEB",
"url": "https://seclists.org/fulldisclosure/2023/Nov/6"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-24-247-01"
},
{
"type": "WEB",
"url": "https://www.txone.com/blog/ten-unpatched-vulnerabilities-in-building-automation-products-identified-by-txone-networks"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Nov/6"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-8683-JCHG-7MG5
Vulnerability from github – Published: 2022-05-13 01:49 – Updated: 2022-05-13 01:49An issue was discovered on Vgate iCar 2 Wi-Fi OBD2 Dongle devices. The data packets that are sent between the iOS or Android application and the OBD dongle are not encrypted. The combination of this vulnerability with the lack of wireless network protection exposes all transferred car data to the public.
{
"affected": [],
"aliases": [
"CVE-2018-11477"
],
"database_specific": {
"cwe_ids": [
"CWE-319"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-05-30T21:29:00Z",
"severity": "MODERATE"
},
"details": "An issue was discovered on Vgate iCar 2 Wi-Fi OBD2 Dongle devices. The data packets that are sent between the iOS or Android application and the OBD dongle are not encrypted. The combination of this vulnerability with the lack of wireless network protection exposes all transferred car data to the public.",
"id": "GHSA-8683-jchg-7mg5",
"modified": "2022-05-13T01:49:15Z",
"published": "2022-05-13T01:49:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-11477"
},
{
"type": "WEB",
"url": "https://www.sec-consult.com/en/blog/advisories/unprotected-wifi-access-unencrypted-data-transfer-in-vgate-icar2-wifi-obd2-dongle"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2018/May/66"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-86MM-QQ2X-P28P
Vulnerability from github – Published: 2022-05-24 22:28 – Updated: 2022-05-24 22:28The affected product is vulnerable to cookie information being transmitted as cleartext over HTTP. An attacker can capture network traffic, obtain the user’s cookie and take over the account.
{
"affected": [],
"aliases": [
"CVE-2021-42699"
],
"database_specific": {
"cwe_ids": [
"CWE-319"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-11-05T16:15:00Z",
"severity": "MODERATE"
},
"details": "The affected product is vulnerable to cookie information being transmitted as cleartext over HTTP. An attacker can capture network traffic, obtain the user\u2019s cookie and take over the account.",
"id": "GHSA-86mm-qq2x-p28p",
"modified": "2022-05-24T22:28:25Z",
"published": "2022-05-24T22:28:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42699"
},
{
"type": "WEB",
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-308-02"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-87FR-H366-PW6Q
Vulnerability from github – Published: 2026-05-14 18:32 – Updated: 2026-05-14 18:32HCL 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.
{
"affected": [],
"aliases": [
"CVE-2025-62310"
],
"database_specific": {
"cwe_ids": [
"CWE-319"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-14T17:16:18Z",
"severity": "MODERATE"
},
"details": "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.",
"id": "GHSA-87fr-h366-pw6q",
"modified": "2026-05-14T18:32:56Z",
"published": "2026-05-14T18:32:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62310"
},
{
"type": "WEB",
"url": "https://support.hcl-software.com/csm?id=kb_article\u0026sysparm_article=KB0130636"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-87GJ-4M36-P6H7
Vulnerability from github – Published: 2025-09-19 00:30 – Updated: 2025-09-19 00:30Cognex In-Sight Explorer and In-Sight Camera Firmware expose
a proprietary protocol on TCP port 1069 to perform management operations such as modifying system properties. The user management functionality handles sensitive data such as registered usernames and passwords over an unencrypted channel, allowing an adjacent attacker to intercept valid credentials to gain access to the device.
{
"affected": [],
"aliases": [
"CVE-2025-54818"
],
"database_specific": {
"cwe_ids": [
"CWE-319"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-18T22:15:46Z",
"severity": "HIGH"
},
"details": "Cognex In-Sight Explorer and In-Sight Camera Firmware expose \n\na proprietary protocol on TCP port 1069 to perform management operations\n such as modifying system properties. The user management functionality \nhandles sensitive data such as registered usernames and passwords over \nan unencrypted channel, allowing an adjacent attacker to intercept valid\n credentials to gain access to the device.",
"id": "GHSA-87gj-4m36-p6h7",
"modified": "2025-09-19T00:30:58Z",
"published": "2025-09-19T00:30:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54818"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-25-261-06"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-87HC-PHMJ-RHGH
Vulnerability from github – Published: 2022-05-13 01:46 – Updated: 2024-04-25 21:29TYPO3 7.6.15 sends an http request to an index.php?loginProvider URI in cases with an https Referer, which allows remote attackers to obtain sensitive cleartext information by sniffing the network and reading the userident and username fields.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "typo3/cms"
},
"versions": [
"7.6.15"
]
}
],
"aliases": [
"CVE-2017-6370"
],
"database_specific": {
"cwe_ids": [
"CWE-319"
],
"github_reviewed": true,
"github_reviewed_at": "2024-04-25T21:29:41Z",
"nvd_published_at": "2017-03-17T17:59:00Z",
"severity": "MODERATE"
},
"details": "TYPO3 7.6.15 sends an http request to an index.php?loginProvider URI in cases with an https Referer, which allows remote attackers to obtain sensitive cleartext information by sniffing the network and reading the userident and username fields.",
"id": "GHSA-87hc-phmj-rhgh",
"modified": "2024-04-25T21:29:41Z",
"published": "2022-05-13T01:46:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-6370"
},
{
"type": "PACKAGE",
"url": "https://github.com/TYPO3/typo3"
},
{
"type": "WEB",
"url": "https://github.com/faizzaidi/TYPO3-v7.6.15-Unencrypted-Login-Request"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/97071"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "TYPO3 Information Disclosure Vulnerability"
}
GHSA-87WX-CPHX-3WGJ
Vulnerability from github – Published: 2022-05-13 01:02 – Updated: 2022-05-13 01:02In KDE KMail 5.2.3, an attacker in possession of S/MIME or PGP encrypted emails can wrap them as sub-parts within a crafted multipart email. The encrypted part(s) can further be hidden using HTML/CSS or ASCII newline characters. This modified multipart email can be re-sent by the attacker to the intended receiver. If the receiver replies to this (benign looking) email, they unknowingly leak the plaintext of the encrypted message part(s) back to the attacker.
{
"affected": [],
"aliases": [
"CVE-2019-10732"
],
"database_specific": {
"cwe_ids": [
"CWE-319"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-04-07T15:29:00Z",
"severity": "MODERATE"
},
"details": "In KDE KMail 5.2.3, an attacker in possession of S/MIME or PGP encrypted emails can wrap them as sub-parts within a crafted multipart email. The encrypted part(s) can further be hidden using HTML/CSS or ASCII newline characters. This modified multipart email can be re-sent by the attacker to the intended receiver. If the receiver replies to this (benign looking) email, they unknowingly leak the plaintext of the encrypted message part(s) back to the attacker.",
"id": "GHSA-87wx-cphx-3wgj",
"modified": "2022-05-13T01:02:54Z",
"published": "2022-05-13T01:02:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-10732"
},
{
"type": "WEB",
"url": "https://bugs.kde.org/show_bug.cgi?id=404698"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2019/06/msg00012.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
Mitigation
Before transmitting, encrypt the data using reliable, confidentiality-protecting cryptographic protocols.
Mitigation
When using web applications with SSL, use SSL for the entire session from login to logout, not just for the initial login page.
Mitigation
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.
Mitigation
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.
Mitigation
Configure servers to use encrypted channels for communication, which may include SSL or other secure protocols.
CAPEC-102: Session Sidejacking
Session sidejacking takes advantage of an unencrypted communication channel between a victim and target system. The attacker sniffs traffic on a network looking for session tokens in unencrypted traffic. Once a session token is captured, the attacker performs malicious actions by using the stolen token with the targeted application to impersonate the victim. This attack is a specific method of session hijacking, which is exploiting a valid session token to gain unauthorized access to a target system or information. Other methods to perform a session hijacking are session fixation, cross-site scripting, or compromising a user or server machine and stealing the session token.
CAPEC-117: Interception
An adversary monitors data streams to or from the target for information gathering purposes. This attack may be undertaken to solely gather sensitive information or to support a further attack against the target. This attack pattern can involve sniffing network traffic as well as other types of data streams (e.g. radio). The adversary can attempt to initiate the establishment of a data stream or passively observe the communications as they unfold. In all variants of this attack, the adversary is not the intended recipient of the data stream. In contrast to other means of gathering information (e.g., targeting data leaks), the adversary must actively position themself so as to observe explicit data channels (e.g. network traffic) and read the content. However, this attack differs from a Adversary-In-the-Middle (CAPEC-94) attack, as the adversary does not alter the content of the communications nor forward data to the intended recipient.
CAPEC-383: Harvesting Information via API Event Monitoring
An adversary hosts an event within an application framework and then monitors the data exchanged during the course of the event for the purpose of harvesting any important data leaked during the transactions. One example could be harvesting lists of usernames or userIDs for the purpose of sending spam messages to those users. One example of this type of attack involves the adversary creating an event within the sub-application. Assume the adversary hosts a "virtual sale" of rare items. As other users enter the event, the attacker records via AiTM (CAPEC-94) proxy the user_ids and usernames of everyone who attends. The adversary would then be able to spam those users within the application using an automated script.
CAPEC-477: Signature Spoofing by Mixing Signed and Unsigned Content
An attacker exploits the underlying complexity of a data structure that allows for both signed and unsigned content, to cause unsigned data to be processed as though it were signed data.
CAPEC-65: Sniff Application Code
An adversary passively sniffs network communications and captures application code bound for an authorized client. Once obtained, they can use it as-is, or through reverse-engineering glean sensitive information or exploit the trust relationship between the client and server. Such code may belong to a dynamic update to the client, a patch being applied to a client component or any such interaction where the client is authorized to communicate with the server.