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.
3960 vulnerabilities reference this CWE, most recent first.
GHSA-X4HH-VFX4-455P
Vulnerability from github – Published: 2025-08-15 18:31 – Updated: 2025-08-15 18:31Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Authenticator Login allows Authentication Bypass.This issue affects Authenticator Login: from 0.0.0 before 2.1.4.
{
"affected": [],
"aliases": [
"CVE-2025-8995"
],
"database_specific": {
"cwe_ids": [
"CWE-288",
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-15T17:15:34Z",
"severity": "CRITICAL"
},
"details": "Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Authenticator Login allows Authentication Bypass.This issue affects Authenticator Login: from 0.0.0 before 2.1.4.",
"id": "GHSA-x4hh-vfx4-455p",
"modified": "2025-08-15T18:31:12Z",
"published": "2025-08-15T18:31:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-8995"
},
{
"type": "WEB",
"url": "https://www.drupal.org/sa-contrib-2025-096"
}
],
"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-X4M5-7H4Q-F244
Vulnerability from github – Published: 2022-05-24 19:08 – Updated: 2022-05-24 19:08An issue in HNAP1/GetMultipleHNAPs of Motorola CX2 router CX 1.0.2 Build 20190508 Rel.97360n allows attackers to access the components GetStationSettings, GetWebsiteFilterSettings and GetNetworkSettings without authentication.
{
"affected": [],
"aliases": [
"CVE-2020-21936"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-07-21T15:15:00Z",
"severity": "MODERATE"
},
"details": "An issue in HNAP1/GetMultipleHNAPs of Motorola CX2 router CX 1.0.2 Build 20190508 Rel.97360n allows attackers to access the components GetStationSettings, GetWebsiteFilterSettings and GetNetworkSettings without authentication.",
"id": "GHSA-x4m5-7h4q-f244",
"modified": "2022-05-24T19:08:49Z",
"published": "2022-05-24T19:08:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-21936"
},
{
"type": "WEB",
"url": "https://github.com/cc-crack/router/blob/master/motocx2.md"
},
{
"type": "WEB",
"url": "https://l0n0l.xyz/post/motocx2"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-X4MX-M5P4-FMG7
Vulnerability from github – Published: 2022-05-13 01:36 – Updated: 2022-05-13 01:36A vulnerability was discovered in Siemens OZW672 (all versions) and OZW772 (all versions) that could allow an attacker with access to port 21/tcp to access or alter historical measurement data stored on the device.
{
"affected": [],
"aliases": [
"CVE-2017-6872"
],
"database_specific": {
"cwe_ids": [
"CWE-306",
"CWE-668"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-08-08T00:29:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability was discovered in Siemens OZW672 (all versions) and OZW772 (all versions) that could allow an attacker with access to port 21/tcp to access or alter historical measurement data stored on the device.",
"id": "GHSA-x4mx-m5p4-fmg7",
"modified": "2022-05-13T01:36:23Z",
"published": "2022-05-13T01:36:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-6872"
},
{
"type": "WEB",
"url": "https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-563539.pdf"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/99473"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-X4P7-7CHP-64HQ
Vulnerability from github – Published: 2026-03-18 03:32 – Updated: 2026-05-20 01:09A flaw was found in Keycloak. A remote attacker could bypass security controls by sending a valid SAML response from an external Identity Provider (IdP) to the Keycloak SAML endpoint for IdP-initiated broker logins. This allows the attacker to complete broker logins even when the SAML Identity Provider is disabled, leading to unauthorized authentication.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.keycloak:keycloak-services"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "26.5.5"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.keycloak:keycloak-server-spi-private"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "26.5.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-2603"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-18T20:17:33Z",
"nvd_published_at": "2026-03-18T02:16:24Z",
"severity": "HIGH"
},
"details": "A flaw was found in Keycloak. A remote attacker could bypass security controls by sending a valid SAML response from an external Identity Provider (IdP) to the Keycloak SAML endpoint for IdP-initiated broker logins. This allows the attacker to complete broker logins even when the SAML Identity Provider is disabled, leading to unauthorized authentication.",
"id": "GHSA-x4p7-7chp-64hq",
"modified": "2026-05-20T01:09:01Z",
"published": "2026-03-18T03:32:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2603"
},
{
"type": "WEB",
"url": "https://github.com/keycloak/keycloak/issues/46911"
},
{
"type": "WEB",
"url": "https://github.com/keycloak/keycloak/pull/46932"
},
{
"type": "WEB",
"url": "https://github.com/keycloak/keycloak/commit/4fd5367e6cc28cfa68fb2240fc459c12b1fdbf2a"
},
{
"type": "WEB",
"url": "https://github.com/keycloak/keycloak/commit/8ed7e59dc08d79751a27c23aadb590f06b43f132"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3925"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3926"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3947"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3948"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-2603"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2440300"
},
{
"type": "PACKAGE",
"url": "https://github.com/keycloak/keycloak"
},
{
"type": "WEB",
"url": "https://github.com/keycloak/keycloak/commits/26.5.5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Keycloak: Unauthorized authentication via disabled SAML Identity Provider"
}
GHSA-X4PC-PQFQ-54J2
Vulnerability from github – Published: 2026-08-05 09:31 – Updated: 2026-08-05 09:31The Aerie/PlanDev sequencing-server's authorization middleware (sequencing-server/src/app.ts) derives the caller's Hasura session role via getHasuraSession(), which prefers a session_variables object taken directly from the client-supplied JSON request body over the Authorization header's JWT claims, with no verification that the request actually originated from Hasura. By setting {"session_variables":{"x-hasura-role":"aerie_admin"}} in the body of a request to POST /command-expansion/put-expansion with no Authorization header, an unauthenticated attacker satisfies the role check and can insert arbitrary expansion rules into sequencing.expansion_rule, which govern how spacecraft activities are translated into commands. Separately, POST /put-dictionary is explicitly listed in the ENDPOINTS_WHITELIST and is exempt from any authentication, allowing unauthenticated writes of command dictionaries.
{
"affected": [],
"aliases": [
"CVE-2026-71214"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-05T08:16:43Z",
"severity": "CRITICAL"
},
"details": "The Aerie/PlanDev sequencing-server\u0027s authorization middleware (sequencing-server/src/app.ts) derives the caller\u0027s Hasura session role via getHasuraSession(), which prefers a session_variables object taken directly from the client-supplied JSON request body over the Authorization header\u0027s JWT claims, with no verification that the request actually originated from Hasura. By setting {\"session_variables\":{\"x-hasura-role\":\"aerie_admin\"}} in the body of a request to POST /command-expansion/put-expansion with no Authorization header, an unauthenticated attacker satisfies the role check and can insert arbitrary expansion rules into sequencing.expansion_rule, which govern how spacecraft activities are translated into commands. Separately, POST /put-dictionary is explicitly listed in the ENDPOINTS_WHITELIST and is exempt from any authentication, allowing unauthenticated writes of command dictionaries.",
"id": "GHSA-x4pc-pqfq-54j2",
"modified": "2026-08-05T09:31:18Z",
"published": "2026-08-05T09:31:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71214"
},
{
"type": "WEB",
"url": "https://github.com/NASA-AMMOS/plandev"
}
],
"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-X4VW-32X4-HM2P
Vulnerability from github – Published: 2022-05-24 17:37 – Updated: 2023-04-26 21:30An issue was discovered on D-Link DSL-2888A devices with firmware prior to AU_2.31_V1.1.47ae55. Lack of authentication functionality allows an attacker to assign a static IP address that was once used by a valid user.
{
"affected": [],
"aliases": [
"CVE-2020-24580"
],
"database_specific": {
"cwe_ids": [
"CWE-287",
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-12-22T19:15:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered on D-Link DSL-2888A devices with firmware prior to AU_2.31_V1.1.47ae55. Lack of authentication functionality allows an attacker to assign a static IP address that was once used by a valid user.",
"id": "GHSA-x4vw-32x4-hm2p",
"modified": "2023-04-26T21:30:36Z",
"published": "2022-05-24T17:37:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-24580"
},
{
"type": "WEB",
"url": "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/d-link-multiple-security-vulnerabilities-leading-to-rce"
},
{
"type": "WEB",
"url": "https://www.trustwave.com/en-us/resources/security-resources/security-advisories"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-X4WW-V95C-7GCP
Vulnerability from github – Published: 2026-07-22 00:31 – Updated: 2026-07-22 00:31Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Coherence. Successful attacks of this vulnerability can result in takeover of Oracle Coherence. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
{
"affected": [],
"aliases": [
"CVE-2026-60241"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-21T22:17:25Z",
"severity": "CRITICAL"
},
"details": "Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Coherence. Successful attacks of this vulnerability can result in takeover of Oracle Coherence. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).",
"id": "GHSA-x4ww-v95c-7gcp",
"modified": "2026-07-22T00:31:27Z",
"published": "2026-07-22T00:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-60241"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2026.html"
}
],
"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-X546-PRG5-FVP8
Vulnerability from github – Published: 2026-06-10 15:31 – Updated: 2026-06-10 15:31A missing authentication check on the Aix‑DB "/llm/process_llm_out" endpoint allows unauthenticated clients to execute arbitrary "SELECT" SQL queries and retrieve database data, as the endpoint lacks the token validation enforced on all other application endpoints. All releases up to 1.2.4 are considered vulnerable. Status of next releases is unknown as the vulnerability has not been addressed by any patch.
{
"affected": [],
"aliases": [
"CVE-2026-8335"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-10T15:16:42Z",
"severity": "HIGH"
},
"details": "A missing authentication check on the Aix\u2011DB \"/llm/process_llm_out\" endpoint allows unauthenticated clients to execute arbitrary \"SELECT\" SQL queries and retrieve database data, as the endpoint lacks the token validation enforced on all other application endpoints.\nAll releases up to 1.2.4 are considered vulnerable. Status of next releases is unknown as the vulnerability has not been addressed by any patch.",
"id": "GHSA-x546-prg5-fvp8",
"modified": "2026-06-10T15:31:33Z",
"published": "2026-06-10T15:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8335"
},
{
"type": "WEB",
"url": "https://cert.pl/posts/2026/06/CVE-2026-8335"
},
{
"type": "WEB",
"url": "https://github.com/apconw/Aix-DB"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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-X584-WV8X-X4MR
Vulnerability from github – Published: 2026-07-22 00:31 – Updated: 2026-07-22 00:31Vulnerability in the Oracle Unified Directory product of Oracle Fusion Middleware (component: OUD Core). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Unified Directory. While the vulnerability is in Oracle Unified Directory, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Unified Directory accessible data. CVSS 3.1 Base Score 8.6 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N).
{
"affected": [],
"aliases": [
"CVE-2026-60359"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-21T22:17:39Z",
"severity": "HIGH"
},
"details": "Vulnerability in the Oracle Unified Directory product of Oracle Fusion Middleware (component: OUD Core). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Unified Directory. While the vulnerability is in Oracle Unified Directory, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Unified Directory accessible data. CVSS 3.1 Base Score 8.6 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N).",
"id": "GHSA-x584-wv8x-x4mr",
"modified": "2026-07-22T00:31:36Z",
"published": "2026-07-22T00:31:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-60359"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2026.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-X5FH-CQHM-X62G
Vulnerability from github – Published: 2022-05-24 17:36 – Updated: 2022-05-24 17:36A CWE-306: Missing Authentication for Critical Function vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause unauthenticated command execution in the controller when sending special HTTP requests.
{
"affected": [],
"aliases": [
"CVE-2020-7540"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-12-11T01:15:00Z",
"severity": "CRITICAL"
},
"details": "A CWE-306: Missing Authentication for Critical Function vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause unauthenticated command execution in the controller when sending special HTTP requests.",
"id": "GHSA-x5fh-cqhm-x62g",
"modified": "2022-05-24T17:36:08Z",
"published": "2022-05-24T17:36:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-7540"
},
{
"type": "WEB",
"url": "https://www.se.com/ww/en/download/document/SEVD-2020-343-04"
}
],
"schema_version": "1.4.0",
"severity": []
}
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.