Common Weakness Enumeration

CWE-287

Discouraged

Improper Authentication

Abstraction: Class · Status: Draft

API response cwe.mitre.org

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

6984 vulnerabilities reference this CWE, most recent first.

CVE-2026-80099 (GCVE-0-2026-80099)

Vulnerability from cvelistv5 – Published: 2026-09-09 08:28 – Updated: 2026-09-09 16:02
VLAI
Title
Various Newfold Plugins Various Versions - Unauthenticated Authentication Bypass via Bearer Token Validation with Empty Secret
Summary
Several Newfold plugins are vulnerable to Authentication Bypass. The vulnerability exists because the plugins bundle the wp-module-data module. In the module, the `authenticate()` method — registered on the `rest_authentication_errors` filter and therefore evaluated for every unauthenticated REST API request — performs an HMAC-style Bearer token comparison that degenerates when `HiiveConnection::get_auth_token()` returns `false`: PHP coerces `strrev(false)` to `strrev('')`, collapsing the secret salt to the publicly known constant `hash('sha256', '') = e3b0c44...`, while all remaining hash inputs (HTTP method, request URL, raw request body, and the `X-Timestamp` header) remain fully attacker-controlled. This makes it possible for unauthenticated attackers to compute a valid Bearer token entirely offline, pass the token equality check, and have `wp_set_current_user()` invoked against the first administrator returned by `get_users(['role' => 'administrator'])`, granting full administrator-level access and enabling arbitrary REST API operations such as creating new administrator accounts and achieving complete site takeover. Vulnerable versions are WP Plugin Crazy Domains (<= 2.5.2), WP Plugin Web (<= 2.3.4), WP Plugin Hostgator (<= 3.1.0), WP Plugin Bluehost (<= 4.17.1). The affected module is vulnerable in versions up to, and including, 2.9.4.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 15:41 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
Wordfence CNA under the mitre root
CNA scorecard C 65/100 over 2304 records in the last 180 days details
References
Impacted products
Credits
sorin vasile
Show details on NVD website
To clipboard 

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CVE-2026-80097 (GCVE-0-2026-80097)

Vulnerability from cvelistv5 – Published: 2026-09-08 17:13 – Updated: 2026-10-14 23:09
VLAI
Title
Microsoft Authenticator Elevation of Privilege Vulnerability
Summary
Improper authentication in Microsoft Authenticator allows an unauthorized attacker to elevate privileges locally.
Severity
8.6 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 04:19 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
microsoft CNA under the mitre root
CNA scorecard B 82/100 over 3957 records in the last 180 days details
References
Impacted products
Vendor Product Version
Microsoft Microsoft Authenticator for Android Affected: 6.0.0 , < 6.2606.4246 (custom)
    cpe:2.3:a:microsoft:authenticator:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-08 14:00
Show details on NVD website
To clipboard 

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CVE-2026-79974 (GCVE-0-2026-79974)

Vulnerability from cvelistv5 – Published: 2026-09-09 08:38 – Updated: 2026-09-11 03:56
VLAI
Summary
Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to 5.36.00.00, contains an Improper Authentication vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access.
Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 00:00 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
dell CNA under the mitre root
CNA scorecard C 70/100 over 439 records in the last 180 days details
References
Impacted products
Vendor Product Version
Dell Secure Connect Gateway 5.0 - Application Affected: 0 , < 5.36.00.00 or later (semver)
Create a notification for this product.
Dell Secure Connect Gateway 5.0 - Appliance Affected: 0 , < 5.36.00.16 or later (semver)
Create a notification for this product.
Date Public
2026-08-31 06:30
Show details on NVD website
To clipboard 

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CVE-2026-79938 (GCVE-0-2026-79938)

Vulnerability from cvelistv5 – Published: 2026-08-26 19:37 – Updated: 2026-08-27 14:33
VLAI
Summary
Dell PowerProtect Cyber Recovery, versions prior to 20.3, contain an Improper Authentication vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.
Severity
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 14:27 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
dell CNA under the mitre root
CNA scorecard C 70/100 over 439 records in the last 180 days details
References
Impacted products
Vendor Product Version
Dell Power Protect Cyber Recovery Affected: 0 , < 20.3.0.0 (semver)
Create a notification for this product.
Dell Cyber Recovery Affected: 0 , < osupdate-15.4.0-19.bin (custom)
Affected: 0 , < osupdate-15.6.1-1.bin (custom)
Create a notification for this product.
Date Public
2026-08-24 18:30
Show details on NVD website
To clipboard 

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CVE-2026-79787 (GCVE-0-2026-79787)

Vulnerability from cvelistv5 – Published: 2026-08-25 18:23 – Updated: 2026-08-25 18:55
VLAI
Title
Alluxio through 2.9.5 S3 REST Proxy Authentication Bypass via Unverified Request Signature
Summary
Alluxio's S3 REST proxy fails to verify AWS Signature Version 4 signatures in its default configuration, allowing unauthenticated attackers to spoof user identity. Attackers can extract usernames from unsigned Authorization headers and impersonate any user, including service accounts, to read, write, and delete arbitrary data.
Severity
9.3 (Critical)
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
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 18:54 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6439 records in the last 180 days details
References
Impacted products
Vendor Product Version
Alluxio alluxio Affected: 0 , ≤ 2.9.5 (custom)
    cpe:2.3:a:alluxio:alluxio:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-06-29 00:00
Credits
George Chen
Show details on NVD website
To clipboard 

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CVE-2026-78885 (GCVE-0-2026-78885)

Vulnerability from cvelistv5 – Published: 2026-08-25 12:15 – Updated: 2026-08-27 14:35
VLAI
Title
liketrek TREK OIDC Service oidcService.ts findOrCreateUser improper authentication
Summary
A vulnerability was identified in liketrek TREK up to 3.0.22. The impacted element is the function findOrCreateUser of the file server/src/services/oidcService.ts of the component OIDC Service. Such manipulation leads to improper authentication. It is possible to launch the attack remotely. The attack requires a high level of complexity. The exploitability is regarded as difficult. Upgrading to version 3.1.0 is sufficient to resolve this issue. Upgrading the affected component is advised.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
5.6 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C
5.6 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 13:22 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3826 records in the last 180 days details
References
Impacted products
Vendor Product Version
liketrek TREK Affected: 3.0.0
Affected: 3.0.1
Affected: 3.0.2
Affected: 3.0.3
Affected: 3.0.4
Affected: 3.0.5
Affected: 3.0.6
Affected: 3.0.7
Affected: 3.0.8
Affected: 3.0.9
Affected: 3.0.10
Affected: 3.0.11
Affected: 3.0.12
Affected: 3.0.13
Affected: 3.0.14
Affected: 3.0.15
Affected: 3.0.16
Affected: 3.0.17
Affected: 3.0.18
Affected: 3.0.19
Affected: 3.0.20
Affected: 3.0.21
Affected: 3.0.22
Unaffected: 3.1.0
    cpe:2.3:a:liketrek:trek:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
ByteJMP (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-78863 (GCVE-0-2026-78863)

Vulnerability from cvelistv5 – Published: 2026-08-25 11:00 – Updated: 2026-08-27 15:06
VLAI
Title
liketrek TREK Pre-2FA mfa_token authService.ts loginUser improper authentication
Summary
A vulnerability was found in liketrek TREK up to 3.0.22. Impacted is the function loginUser of the file server/src/services/authService.ts of the component Pre-2FA mfa_token Handler. The manipulation results in improper authentication. The attack may be performed from remote. Upgrading to version 3.1.0 is recommended to address this issue. Upgrading the affected component is recommended.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 15:05 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3826 records in the last 180 days details
References
Impacted products
Vendor Product Version
liketrek TREK Affected: 3.0.0
Affected: 3.0.1
Affected: 3.0.2
Affected: 3.0.3
Affected: 3.0.4
Affected: 3.0.5
Affected: 3.0.6
Affected: 3.0.7
Affected: 3.0.8
Affected: 3.0.9
Affected: 3.0.10
Affected: 3.0.11
Affected: 3.0.12
Affected: 3.0.13
Affected: 3.0.14
Affected: 3.0.15
Affected: 3.0.16
Affected: 3.0.17
Affected: 3.0.18
Affected: 3.0.19
Affected: 3.0.20
Affected: 3.0.21
Affected: 3.0.22
Unaffected: 3.1.0
    cpe:2.3:a:liketrek:trek:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
ByteJMP (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-78434 (GCVE-0-2026-78434)

Vulnerability from cvelistv5 – Published: 2026-08-24 21:30 – Updated: 2026-08-25 19:14
VLAI
Title
Faveo Helpdesk post-ticket-reply Endpoint FormController.php post_ticket_reply missing authentication
Summary
A flaw has been found in Faveo Helpdesk up to 2.0.3. This impacts the function FormController::post_ticket_reply of the file app/Http/Controllers/Client/helpdesk/FormController.php of the component post-ticket-reply Endpoint. This manipulation causes missing authentication. The attack can be initiated remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
6.5 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 19:14 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3826 records in the last 180 days details
References
URL Tags
https://vuldb.com/vuln/394712 vdb-entrytechnical-description
https://vuldb.com/vuln/394712/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-78434 third-party-advisory
https://vuldb.com/submit/886394 third-party-advisory
https://github.com/faveosuite/faveo-helpdesk/issu… exploitissue-tracking
Impacted products
Vendor Product Version
Faveo Helpdesk Affected: 2.0.0
Affected: 2.0.1
Affected: 2.0.2
Affected: 2.0.3
    cpe:2.3:a:faveo:helpdesk:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
geochen (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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CVE-2026-78425 (GCVE-0-2026-78425)

Vulnerability from cvelistv5 – Published: 2026-09-17 09:32 – Updated: 2026-09-28 12:04
VLAI
Title
SAML Audience Confusion Allows Cross-SP Authentication
Summary
Authorised users of outside applications behind the same corporate identity provider (IdP), for example, a wiki, a ticketing system, an expenses tool, or anything they legitimately hold an account on can log into their system via SAML SSO. The IdP issues an assertion to them. If that assertion is presented to NeuVector, NeuVector accepts it because the only thing distinguishing "an assertion for NeuVector" from "an assertion for the wiki" is the element, and the `NotInAudience` warning that reports the mismatch is never read.
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 12:12 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
suse CNA under the mitre root
CNA scorecard B 78/100 over 101 records in the last 180 days details
References
Impacted products
Vendor Product Version
SUSE github.com/neuvector/neuvector Affected: 0 , ≤ v5.6.1 (custom)
    cpe:2.3:a:suse:github.com_neuvector_neuvector:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-28 12:00
Show details on NVD website
To clipboard 

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CVE-2026-78308 (GCVE-0-2026-78308)

Vulnerability from cvelistv5 – Published: 2026-09-24 08:35 – Updated: 2026-10-15 01:47
VLAI
Title
Authentication Bypass in DIAEnergie
Summary
Improper Authentication vulnerability in DIAEnergie allows Authentication Bypass. This issue affects DIAEnergie: before 1.11.00.022.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-24 12:36 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
Deltaww CNA under the icscert root
CNA scorecard B 79/100 over 24 records in the last 180 days details
References
Impacted products
Vendor Product Version
Deltaww DIAEnergie Affected: 0 , < 1.11.00.022 (custom)
    cpe:2.3:a:deltaww:diaenergie:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-24 08:01
Credits
Alex Williams from Pellera Technologies VulnCheck
Show details on NVD website
To clipboard 

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Mitigation
Architecture and Design

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.

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