CWE-287
DiscouragedImproper Authentication
Abstraction: Class · Status: Draft
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
5964 vulnerabilities reference this CWE, most recent first.
GHSA-XH8X-J8H3-M5PH
Vulnerability from github – Published: 2022-05-24 16:51 – Updated: 2024-06-10 19:29An issue was discovered that affects the following versions of Rancher: v2.0.0 through v2.0.13, v2.1.0 through v2.1.8, and v2.2.0 through 2.2.1. When Rancher starts for the first time, it creates a default admin user with a well-known password. After initial setup, the Rancher administrator may choose to delete this default admin user. If Rancher is restarted, the default admin user will be recreated with the well-known default password. An attacker could exploit this by logging in with the default admin credentials. This can be mitigated by deactivating the default admin user rather than completing deleting them.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/rancher/rancher"
},
"ranges": [
{
"events": [
{
"introduced": "2.0.0"
},
{
"last_affected": "2.0.13"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/rancher/rancher"
},
"ranges": [
{
"events": [
{
"introduced": "2.1.0"
},
{
"last_affected": "2.1.8"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/rancher/rancher"
},
"ranges": [
{
"events": [
{
"introduced": "2.2.0"
},
{
"fixed": "2.2.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2019-11202"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": true,
"github_reviewed_at": "2024-04-24T21:40:20Z",
"nvd_published_at": "2019-07-30T17:15:00Z",
"severity": "CRITICAL"
},
"details": "An issue was discovered that affects the following versions of Rancher: v2.0.0 through v2.0.13, v2.1.0 through v2.1.8, and v2.2.0 through 2.2.1. When Rancher starts for the first time, it creates a default admin user with a well-known password. After initial setup, the Rancher administrator may choose to delete this default admin user. If Rancher is restarted, the default admin user will be recreated with the well-known default password. An attacker could exploit this by logging in with the default admin credentials. This can be mitigated by deactivating the default admin user rather than completing deleting them.",
"id": "GHSA-xh8x-j8h3-m5ph",
"modified": "2024-06-10T19:29:16Z",
"published": "2022-05-24T16:51:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11202"
},
{
"type": "WEB",
"url": "https://forums.rancher.com/t/rancher-release-v2-2-2-addresses-rancher-cve-2019-11202-and-stability-issues/13977"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-xh8x-j8h3-m5ph"
},
{
"type": "PACKAGE",
"url": "https://github.com/rancher/rancher"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2024-2784"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Rancher Recreates Default User With Known Password Despite Deletion"
}
GHSA-XHFJ-8J4V-XMJJ
Vulnerability from github – Published: 2022-05-13 01:36 – Updated: 2022-05-13 01:36An Improper Authentication issue was discovered in OSIsoft PI Server 2017 PI Data Archive versions prior to 2017. PI Network Manager using older protocol versions contains a flaw that could allow a malicious user to authenticate with a server and then cause PI Network Manager to behave in an undefined manner.
{
"affected": [],
"aliases": [
"CVE-2017-7934"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-08-25T19:29:00Z",
"severity": "MODERATE"
},
"details": "An Improper Authentication issue was discovered in OSIsoft PI Server 2017 PI Data Archive versions prior to 2017. PI Network Manager using older protocol versions contains a flaw that could allow a malicious user to authenticate with a server and then cause PI Network Manager to behave in an undefined manner.",
"id": "GHSA-xhfj-8j4v-xmjj",
"modified": "2022-05-13T01:36:12Z",
"published": "2022-05-13T01:36:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7934"
},
{
"type": "WEB",
"url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-164-02"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/99059"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XHMG-FCJG-C5RX
Vulnerability from github – Published: 2022-05-13 01:30 – Updated: 2022-05-13 01:30Race condition in the Phone Proxy component in Cisco Adaptive Security Appliance (ASA) Software 9.1(.3) and earlier allows remote attackers to bypass sec_db authentication and provide certain pass-through services to untrusted devices via a crafted configuration-file TFTP request, aka Bug ID CSCuj66766.
{
"affected": [],
"aliases": [
"CVE-2014-0739"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2014-02-22T21:55:00Z",
"severity": "MODERATE"
},
"details": "Race condition in the Phone Proxy component in Cisco Adaptive Security Appliance (ASA) Software 9.1(.3) and earlier allows remote attackers to bypass sec_db authentication and provide certain pass-through services to untrusted devices via a crafted configuration-file TFTP request, aka Bug ID CSCuj66766.",
"id": "GHSA-xhmg-fcjg-c5rx",
"modified": "2022-05-13T01:30:22Z",
"published": "2022-05-13T01:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2014-0739"
},
{
"type": "WEB",
"url": "http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-0739"
},
{
"type": "WEB",
"url": "http://tools.cisco.com/security/center/viewAlert.x?alertId=32955"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-XHQG-F253-XFR4
Vulnerability from github – Published: 2022-05-17 02:19 – Updated: 2022-05-17 02:19Unspecified vulnerability in Sun Integrated Lights-Out Manager (ILOM) 2.0.1.5 through 2.0.4.26 allows remote authenticated users to (1) access the service processor (SP) and cause a denial of service (shutdown or reboot), or (2) access the host operating system and have an unspecified impact, via unknown vectors.
{
"affected": [],
"aliases": [
"CVE-2008-4722"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2008-10-23T22:00:00Z",
"severity": "HIGH"
},
"details": "Unspecified vulnerability in Sun Integrated Lights-Out Manager (ILOM) 2.0.1.5 through 2.0.4.26 allows remote authenticated users to (1) access the service processor (SP) and cause a denial of service (shutdown or reboot), or (2) access the host operating system and have an unspecified impact, via unknown vectors.",
"id": "GHSA-xhqg-f253-xfr4",
"modified": "2022-05-17T02:19:21Z",
"published": "2022-05-17T02:19:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2008-4722"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/46023"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/32298"
},
{
"type": "WEB",
"url": "http://sunsolve.sun.com/search/document.do?assetkey=1-26-243486-1"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/31861"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id?1021094"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2008/2890"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-XHRM-C42H-GC35
Vulnerability from github – Published: 2022-05-24 17:02 – Updated: 2024-04-04 02:41Anviz access control devices allow unverified password change which allows remote attackers to change the administrator password without prior authentication.
{
"affected": [],
"aliases": [
"CVE-2019-12394"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-12-02T17:15:00Z",
"severity": "CRITICAL"
},
"details": "Anviz access control devices allow unverified password change which allows remote attackers to change the administrator password without prior authentication.",
"id": "GHSA-xhrm-c42h-gc35",
"modified": "2024-04-04T02:41:23Z",
"published": "2022-05-24T17:02:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-12394"
},
{
"type": "WEB",
"url": "https://www.0x90.zone/multiple/reverse/2019/11/28/Anviz-pwn.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-XHW8-CW4M-2J3C
Vulnerability from github – Published: 2022-12-06 00:30 – Updated: 2022-12-06 21:30An access control issue in MobaXterm before v22.1 allows attackers to make connections to the server via the SSH or SFTP protocols without authentication.
{
"affected": [],
"aliases": [
"CVE-2022-38336"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-06T00:15:00Z",
"severity": "HIGH"
},
"details": "An access control issue in MobaXterm before v22.1 allows attackers to make connections to the server via the SSH or SFTP protocols without authentication.",
"id": "GHSA-xhw8-cw4m-2j3c",
"modified": "2022-12-06T21:30:45Z",
"published": "2022-12-06T00:30:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-38336"
},
{
"type": "WEB",
"url": "https://docs.ssh-mitm.at/vulnerabilities/CVE-2022-38336.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XHWC-8Q63-685M
Vulnerability from github – Published: 2021-12-22 00:00 – Updated: 2022-01-06 00:01Dell PowerScale OneFS, versions 8.2.2-9.3.0.x, contain an authentication bypass by primary weakness in one of the authentication factors. A remote unauthenticated attacker may potentially exploit this vulnerability and bypass one of the factors of authentication.
{
"affected": [],
"aliases": [
"CVE-2021-36350"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-12-21T17:15:00Z",
"severity": "HIGH"
},
"details": "Dell PowerScale OneFS, versions 8.2.2-9.3.0.x, contain an authentication bypass by primary weakness in one of the authentication factors. A remote unauthenticated attacker may potentially exploit this vulnerability and bypass one of the factors of authentication.",
"id": "GHSA-xhwc-8q63-685m",
"modified": "2022-01-06T00:01:22Z",
"published": "2021-12-22T00:00:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36350"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/000194157"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-XJ2P-GVRG-V6WM
Vulnerability from github – Published: 2022-05-24 17:03 – Updated: 2024-01-09 12:30A vulnerability has been identified in SiNVR 3 Central Control Server (CCS) (all versions), SiNVR 3 Video Server (all versions). The SiNVR 3 Central Control Server (CCS) contains an authentication bypass vulnerability in its XML-based communication protocol as provided by default on ports 5444/tcp and 5440/tcp. A remote attacker with network access to the CCS server could exploit this vulnerability to read the CCS users database, including the passwords of all users in obfuscated cleartext.
{
"affected": [],
"aliases": [
"CVE-2019-18337"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-12-12T19:15:00Z",
"severity": "CRITICAL"
},
"details": "A vulnerability has been identified in SiNVR 3 Central Control Server (CCS) (all versions), SiNVR 3 Video Server (all versions). The SiNVR 3 Central Control Server (CCS) contains an authentication bypass vulnerability in its XML-based communication protocol as provided by default on ports 5444/tcp and 5440/tcp. A remote attacker with network access to the CCS server could exploit this vulnerability to read the CCS users database, including the passwords of all users in obfuscated cleartext.",
"id": "GHSA-xj2p-gvrg-v6wm",
"modified": "2024-01-09T12:30:33Z",
"published": "2022-05-24T17:03:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-18337"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-761617.pdf"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-761844.pdf"
}
],
"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-XJ32-W24W-7C6Q
Vulnerability from github – Published: 2026-06-05 12:31 – Updated: 2026-06-05 15:32An Improper Authentication vulnerability in the /api/Cdn/GetFile endpoint of linqi allows unauthenticated, remote attackers to bypass file access controls. The ValidateAnonFileAccess function incorrectly grants access if an 'AnonFile' query parameter containing exactly 256 characters is provided. While this flaw allows bypassing the intended authorization check, the actual security impact is negligible; the exposed resources are strictly limited to minified JavaScript and CSS files that contain no sensitive data and are already publicly accessible via a standard CDN.
{
"affected": [],
"aliases": [
"CVE-2026-11345"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-05T12:16:37Z",
"severity": "MODERATE"
},
"details": "An Improper Authentication vulnerability in the /api/Cdn/GetFile endpoint of linqi allows unauthenticated, remote attackers to bypass file access controls. The ValidateAnonFileAccess function incorrectly grants access if an \u0027AnonFile\u0027 query parameter containing exactly 256 characters is provided. While this flaw allows bypassing the intended authorization check, the actual security impact is negligible; the exposed resources are strictly limited to minified JavaScript and CSS files that contain no sensitive data and are already publicly accessible via a standard CDN.",
"id": "GHSA-xj32-w24w-7c6q",
"modified": "2026-06-05T15:32:22Z",
"published": "2026-06-05T12:31:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11345"
},
{
"type": "WEB",
"url": "https://linqi.help/en/reference/security/security-advisories/#security-advisory-improper-authentication-bypass-in-cdn-file-access-in-linqi"
},
{
"type": "WEB",
"url": "https://linqi.help/en/reference/security/security-advisories/#security-advisory-improper-authentication-bypass-in-cdn-file-access-in-the-linqi-application"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/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-XJ3X-55GF-J7Q8
Vulnerability from github – Published: 2022-05-01 23:58 – Updated: 2022-05-01 23:58admin/index.php in Maian Search 1.1 and earlier allows remote attackers to bypass authentication and gain administrative access by sending an arbitrary search_cookie cookie.
{
"affected": [],
"aliases": [
"CVE-2008-3317"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2008-07-25T16:41:00Z",
"severity": "HIGH"
},
"details": "admin/index.php in Maian Search 1.1 and earlier allows remote attackers to bypass authentication and gain administrative access by sending an arbitrary search_cookie cookie.",
"id": "GHSA-xj3x-55gf-j7q8",
"modified": "2022-05-01T23:58:53Z",
"published": "2022-05-01T23:58:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2008-3317"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/43753"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/6066"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/31075"
},
{
"type": "WEB",
"url": "http://securityreason.com/securityalert/4042"
},
{
"type": "WEB",
"url": "http://www.maianscriptworld.co.uk/free-php-scripts/maian-search/development/index.html"
},
{
"type": "WEB",
"url": "http://www.maianscriptworld.co.uk/news.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/30211"
}
],
"schema_version": "1.4.0",
"severity": []
}
Mitigation
Strategy: Libraries or Frameworks
Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
CAPEC-114: Authentication Abuse
An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker.
CAPEC-115: Authentication Bypass
An attacker gains access to application, service, or device with the privileges of an authorized or privileged user by evading or circumventing an authentication mechanism. The attacker is therefore able to access protected data without authentication ever having taken place.
CAPEC-151: Identity Spoofing
Identity Spoofing refers to the action of assuming (i.e., taking on) the identity of some other entity (human or non-human) and then using that identity to accomplish a goal. An adversary may craft messages that appear to come from a different principle or use stolen / spoofed authentication credentials.
CAPEC-194: Fake the Source of Data
An adversary takes advantage of improper authentication to provide data or services under a falsified identity. The purpose of using the falsified identity may be to prevent traceability of the provided data or to assume the rights granted to another individual. One of the simplest forms of this attack would be the creation of an email message with a modified "From" field in order to appear that the message was sent from someone other than the actual sender. The root of the attack (in this case the email system) fails to properly authenticate the source and this results in the reader incorrectly performing the instructed action. Results of the attack vary depending on the details of the attack, but common results include privilege escalation, obfuscation of other attacks, and data corruption/manipulation.
CAPEC-22: Exploiting Trust in Client
An attack of this type exploits vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by communicating directly with the server where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
CAPEC-57: Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to obtain sensitive data once SSL is terminated.
CAPEC-593: Session Hijacking
This type of attack involves an adversary that exploits weaknesses in an application's use of sessions in performing authentication. The adversary is able to steal or manipulate an active session and use it to gain unathorized access to the application.
CAPEC-633: Token Impersonation
An adversary exploits a weakness in authentication to create an access token (or equivalent) that impersonates a different entity, and then associates a process/thread to that that impersonated token. This action causes a downstream user to make a decision or take action that is based on the assumed identity, and not the response that blocks the adversary.
CAPEC-650: Upload a Web Shell to a Web Server
By exploiting insufficient permissions, it is possible to upload a web shell to a web server in such a way that it can be executed remotely. This shell can have various capabilities, thereby acting as a "gateway" to the underlying web server. The shell might execute at the higher permission level of the web server, providing the ability the execute malicious code at elevated levels.
CAPEC-94: Adversary in the Middle (AiTM)
An adversary targets the communication between two components (typically client and server), in order to alter or obtain data from transactions. A general approach entails the adversary placing themself within the communication channel between the two components.