CWE-306
AllowedMissing Authentication for Critical Function
Abstraction: Base · Status: Draft
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
3465 vulnerabilities reference this CWE, most recent first.
GHSA-P9Q7-PF62-483H
Vulnerability from github – Published: 2023-02-08 12:30 – Updated: 2023-02-18 21:30Missing authentication when creating and managing the B&R APROL database in versions < R 4.2-07 allows reading and changing the system configuration.
{
"affected": [],
"aliases": [
"CVE-2022-43761"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-02-08T10:15:00Z",
"severity": "HIGH"
},
"details": "Missing authentication when creating and managing the B\u0026R APROL database in versions \u003c R 4.2-07 allows reading and changing the system configuration.",
"id": "GHSA-p9q7-pf62-483h",
"modified": "2023-02-18T21:30:18Z",
"published": "2023-02-08T12:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-43761"
},
{
"type": "WEB",
"url": "https://www.br-automation.com/downloads_br_productcatalogue/assets/1674823095245-en-original-1.0.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-PC62-X5WW-3XM5
Vulnerability from github – Published: 2026-04-23 18:33 – Updated: 2026-04-23 18:33Kofax Capture, now referred to as Tungsten Capture, version 6.0.0.0 (other versions may be affected) exposes a deprecated .NET Remoting HTTP channel on port 2424 via the Ascent Capture Service that is accessible without authentication and uses a default, publicly known endpoint identifier. An unauthenticated remote attacker can exploit .NET Remoting object unmarshalling techniques to instantiate a remote System.Net.WebClient object and read arbitrary files from the server filesystem, write attacker-controlled files to the server, or coerce NTLMv2 authentication to an attacker-controlled host, enabling sensitive credential disclosure, denial of service, remote code execution, or lateral movement depending on service account privileges and network environment.
{
"affected": [],
"aliases": [
"CVE-2026-23751"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-23T16:16:24Z",
"severity": "CRITICAL"
},
"details": "Kofax Capture, now referred to as Tungsten Capture, version 6.0.0.0 (other versions may be affected) exposes a deprecated .NET Remoting HTTP channel on port 2424 via the Ascent Capture Service that is accessible without authentication and uses a default, publicly known endpoint identifier. An unauthenticated remote attacker can exploit .NET Remoting object unmarshalling techniques to instantiate a remote System.Net.WebClient object and read arbitrary files from the server filesystem, write attacker-controlled files to the server, or coerce NTLMv2 authentication to an attacker-controlled host, enabling sensitive credential disclosure, denial of service, remote code execution, or lateral movement depending on service account privileges and network environment.",
"id": "GHSA-pc62-x5ww-3xm5",
"modified": "2026-04-23T18:33:03Z",
"published": "2026-04-23T18:33:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23751"
},
{
"type": "WEB",
"url": "https://docshield.tungstenautomation.com/Portal/Products/en_US/KC/11.1.0-40hy9nfk91/KC.htm"
},
{
"type": "WEB",
"url": "https://gist.github.com/VAMorales/3888941d6e5efdd4b2e673e999f68ca2"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/kofax-capture-unauthenticated-file-read-write-smb-coercion-via-net-remoting"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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-PC6G-GMRW-X724
Vulnerability from github – Published: 2026-01-08 21:30 – Updated: 2026-01-09 21:31An issue was discovered in Panda Wireless PWRU0 devices with firmware 2.2.9 that exposes multiple HTTP endpoints (/goform/setWan, /goform/setLan, /goform/wirelessBasic) that do not enforce authentication. A remote unauthenticated attacker can modify WAN, LAN, and wireless settings directly, leading to privilege escalation and denial of service.
{
"affected": [],
"aliases": [
"CVE-2025-68715"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-08T20:15:44Z",
"severity": "CRITICAL"
},
"details": "An issue was discovered in Panda Wireless PWRU0 devices with firmware 2.2.9 that exposes multiple HTTP endpoints (/goform/setWan, /goform/setLan, /goform/wirelessBasic) that do not enforce authentication. A remote unauthenticated attacker can modify WAN, LAN, and wireless settings directly, leading to privilege escalation and denial of service.",
"id": "GHSA-pc6g-gmrw-x724",
"modified": "2026-01-09T21:31:35Z",
"published": "2026-01-08T21:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68715"
},
{
"type": "WEB",
"url": "https://github.com/actuator/cve/blob/main/PandaWireless/CVE-2025-68715.txt"
},
{
"type": "WEB",
"url": "https://github.com/actuator/cve/tree/main/PandaWireless"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PC7W-R272-4XGR
Vulnerability from github – Published: 2026-02-23 21:31 – Updated: 2026-02-23 21:31ElementsKit Lite (elementskit-lite) WordPress plugin versions prior to 3.7.9 expose the REST endpoint /wp-json/elementskit/v1/widget/mailchimp/subscribe without authentication. The endpoint accepts client-supplied Mailchimp API credentials and insufficiently validates certain parameters, including the list parameter, when constructing upstream Mailchimp API requests. An unauthenticated attacker can abuse the endpoint as an open proxy to Mailchimp, potentially triggering unauthorized API calls, manipulating subscription data, exhausting API quotas, or causing resource consumption on the affected WordPress site.
{
"affected": [],
"aliases": [
"CVE-2026-23693"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-23T21:19:10Z",
"severity": "CRITICAL"
},
"details": "ElementsKit Lite (elementskit-lite) WordPress plugin versions prior to 3.7.9 expose the REST endpoint /wp-json/elementskit/v1/widget/mailchimp/subscribe without authentication. The endpoint accepts client-supplied Mailchimp API credentials and insufficiently validates certain parameters, including the list parameter, when constructing upstream Mailchimp API requests. An unauthenticated attacker can abuse the endpoint as an open proxy to Mailchimp, potentially triggering unauthorized API calls, manipulating subscription data, exhausting API quotas, or causing resource consumption on the affected WordPress site.",
"id": "GHSA-pc7w-r272-4xgr",
"modified": "2026-02-23T21:31:27Z",
"published": "2026-02-23T21:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23693"
},
{
"type": "WEB",
"url": "https://wordpress.org/plugins/elementskit-lite"
},
{
"type": "WEB",
"url": "https://wpmet.com/plugin/elementskit"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/elementskit-lite-unauthenticated-mailchimp-rest-endpoint"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/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-PC87-89GV-XQJ4
Vulnerability from github – Published: 2022-05-24 17:12 – Updated: 2022-10-07 00:01A CWE-306: Missing Authentication for Critical Function vulnerability exists in IGSS (Versions 14 and prior using the service: IGSSupdate), which could allow a local user to execute processes that otherwise require escalation privileges when sending local network commands to the IGSS Update Service.
{
"affected": [],
"aliases": [
"CVE-2020-7479"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-03-23T20:15:00Z",
"severity": "MODERATE"
},
"details": "A CWE-306: Missing Authentication for Critical Function vulnerability exists in IGSS (Versions 14 and prior using the service: IGSSupdate), which could allow a local user to execute processes that otherwise require escalation privileges when sending local network commands to the IGSS Update Service.",
"id": "GHSA-pc87-89gv-xqj4",
"modified": "2022-10-07T00:01:03Z",
"published": "2022-05-24T17:12:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-7479"
},
{
"type": "WEB",
"url": "https://www.se.com/ww/en/download/document/SEVD-2020-070-01"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-20-370"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PCJX-5WVP-9X53
Vulnerability from github – Published: 2022-05-24 19:07 – Updated: 2022-05-24 19:07An issue was discovered in Echo ShareCare 8.15.5. It does not perform authentication or authorization checks when accessing a subset of sensitive resources, leading to the ability for unauthenticated users to access pages that are vulnerable to attacks such as SQL injection.
{
"affected": [],
"aliases": [
"CVE-2021-36124"
],
"database_specific": {
"cwe_ids": [
"CWE-287",
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-07-13T14:15:00Z",
"severity": "CRITICAL"
},
"details": "An issue was discovered in Echo ShareCare 8.15.5. It does not perform authentication or authorization checks when accessing a subset of sensitive resources, leading to the ability for unauthenticated users to access pages that are vulnerable to attacks such as SQL injection.",
"id": "GHSA-pcjx-5wvp-9x53",
"modified": "2022-05-24T19:07:36Z",
"published": "2022-05-24T19:07:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36124"
},
{
"type": "WEB",
"url": "https://github.com/atredispartners/advisories/blob/master/ATREDIS-2021-0001.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PCRF-8QQ8-6283
Vulnerability from github – Published: 2022-05-13 01:34 – Updated: 2022-05-13 01:34Tec4Data SmartCooler, all versions prior to firmware 180806, the device responds to a remote unauthenticated reboot command that may be used to perform a denial of service attack.
{
"affected": [],
"aliases": [
"CVE-2018-14796"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-09-20T19:29:00Z",
"severity": "HIGH"
},
"details": "Tec4Data SmartCooler, all versions prior to firmware 180806, the device responds to a remote unauthenticated reboot command that may be used to perform a denial of service attack.",
"id": "GHSA-pcrf-8qq8-6283",
"modified": "2022-05-13T01:34:27Z",
"published": "2022-05-13T01:34:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-14796"
},
{
"type": "WEB",
"url": "https://ics-cert.us-cert.gov/advisories/ICSA-18-263-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PCWR-JXJV-7H3C
Vulnerability from github – Published: 2025-09-14 15:30 – Updated: 2025-09-14 15:30A vulnerability has been discovered in AC Smart II where passwords can be changed without authorization. This page contains a hidden form for resetting the administrator password. The attacker can manipulate the page using developer tools to display and use the form. This form allows you to change the administrator password without verifying login status or user permissions.
{
"affected": [],
"aliases": [
"CVE-2025-10204"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-14T13:15:32Z",
"severity": "HIGH"
},
"details": "A vulnerability has been discovered in AC Smart II where passwords can be changed without authorization.\u00a0This page contains a hidden form for resetting the administrator password.\u00a0The attacker can manipulate the page using developer tools to display and use the form.\u00a0This form allows you to change the administrator password without verifying login status or user permissions.",
"id": "GHSA-pcwr-jxjv-7h3c",
"modified": "2025-09-14T15:30:55Z",
"published": "2025-09-14T15:30:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-10204"
},
{
"type": "WEB",
"url": "https://lgsecurity.lge.com/bulletins"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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-PF5X-RFQF-HX7W
Vulnerability from github – Published: 2026-01-14 00:31 – Updated: 2026-01-14 00:31eXtplorer 2.1.14 contains an authentication bypass vulnerability that allows attackers to login without a password by manipulating the login request. Attackers can exploit this flaw to upload malicious PHP files and execute remote commands on the vulnerable file management system.
{
"affected": [],
"aliases": [
"CVE-2023-54335"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-13T23:16:01Z",
"severity": "CRITICAL"
},
"details": "eXtplorer 2.1.14 contains an authentication bypass vulnerability that allows attackers to login without a password by manipulating the login request. Attackers can exploit this flaw to upload malicious PHP files and execute remote commands on the vulnerable file management system.",
"id": "GHSA-pf5x-rfqf-hx7w",
"modified": "2026-01-14T00:31:29Z",
"published": "2026-01-14T00:31:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54335"
},
{
"type": "WEB",
"url": "https://extplorer.net"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/51067"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/extplorer-authentication-bypass-remote-code-execution-rce"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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-PFCW-98X8-F55C
Vulnerability from github – Published: 2024-08-27 15:32 – Updated: 2024-08-27 15:32The product exposes a service that is intended for local only to all network interfaces without any authentication.
{
"affected": [],
"aliases": [
"CVE-2024-7940"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-27T13:15:06Z",
"severity": "HIGH"
},
"details": "The product exposes a service that is intended for local only to\nall network interfaces without any authentication.",
"id": "GHSA-pfcw-98x8-f55c",
"modified": "2024-08-27T15:32:48Z",
"published": "2024-08-27T15:32:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-7940"
},
{
"type": "WEB",
"url": "https://publisher.hitachienergy.com/preview?DocumentID=8DBD000160\u0026LanguageCode=en\u0026DocumentPartId=\u0026Action=Launch"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
- Divide the software into anonymous, normal, privileged, and administrative areas. Identify which of these areas require a proven user identity, and use a centralized authentication capability.
- Identify all potential communication channels, or other means of interaction with the software, to ensure that all channels are appropriately protected, including those channels that are assumed to be accessible only by authorized parties. Developers sometimes perform authentication at the primary channel, but open up a secondary channel that is assumed to be private. For example, a login mechanism may be listening on one network port, but after successful authentication, it may open up a second port where it waits for the connection, but avoids authentication because it assumes that only the authenticated party will connect to the port.
- In general, if the software or protocol allows a single session or user state to persist across multiple connections or channels, authentication and appropriate credential management need to be used throughout.
Mitigation MIT-15
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation
- Where possible, avoid implementing custom, "grow-your-own" authentication routines and consider using authentication capabilities as provided by the surrounding framework, operating system, or environment. These capabilities may avoid common weaknesses that are unique to authentication; support automatic auditing and tracking; and make it easier to provide a clear separation between authentication tasks and authorization tasks.
- In environments such as the World Wide Web, the line between authentication and authorization is sometimes blurred. If custom authentication routines are required instead of those provided by the server, then these routines must be applied to every single page, since these pages could be requested directly.
Mitigation MIT-4.5
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator [REF-45].
Mitigation
When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to require strong authentication for users who should be allowed to access the data [REF-1297] [REF-1298] [REF-1302].
CAPEC-12: Choosing Message Identifier
This pattern of attack is defined by the selection of messages distributed via multicast or public information channels that are intended for another client by determining the parameter value assigned to that client. This attack allows the adversary to gain access to potentially privileged information, and to possibly perpetrate other attacks through the distribution means by impersonation. If the channel/message being manipulated is an input rather than output mechanism for the system, (such as a command bus), this style of attack could be used to change the adversary's identifier to more a privileged one.
CAPEC-166: Force the System to Reset Values
An attacker forces the target into a previous state in order to leverage potential weaknesses in the target dependent upon a prior configuration or state-dependent factors. Even in cases where an attacker may not be able to directly control the configuration of the targeted application, they may be able to reset the configuration to a prior state since many applications implement reset functions.
CAPEC-216: Communication Channel Manipulation
An adversary manipulates a setting or parameter on communications channel in order to compromise its security. This can result in information exposure, insertion/removal of information from the communications stream, and/or potentially system compromise.
CAPEC-36: Using Unpublished Interfaces or Functionality
An adversary searches for and invokes interfaces or functionality that the target system designers did not intend to be publicly available. If interfaces fail to authenticate requests, the attacker may be able to invoke functionality they are not authorized for.
CAPEC-62: Cross Site Request Forgery
An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.