Common Weakness Enumeration

CWE-287

Discouraged

Improper 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.

6984 vulnerabilities reference this CWE, most recent first.

CVE-2026-78168 (GCVE-0-2026-78168)

Vulnerability from cvelistv5 – Published: 2026-08-24 01:30 – Updated: 2026-08-27 14:37
VLAI
Title
EFM ipTIME T24000M Session Validation httpcon_check_session_url improper authentication
Summary
A security vulnerability has been detected in EFM ipTIME T24000M up to 14.20.0. This affects the function httpcon_check_session_url of the component Session Validation Handler. Such manipulation leads to improper authentication. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 13:31 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
URL Tags
https://vuldb.com/vuln/394557 vdb-entrytechnical-description
https://vuldb.com/vuln/394557/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-78168 third-party-advisory
https://vuldb.com/submit/883766 third-party-advisory
https://github.com/AdminSafe/CVE/issues/10 exploitissue-tracking
Impacted products
Vendor Product Version
EFM ipTIME T24000M Affected: 14.0
Affected: 14.1
Affected: 14.2
Affected: 14.3
Affected: 14.4
Affected: 14.5
Affected: 14.6
Affected: 14.7
Affected: 14.8
Affected: 14.9
Affected: 14.10
Affected: 14.11
Affected: 14.12
Affected: 14.13
Affected: 14.14
Affected: 14.15
Affected: 14.16
Affected: 14.17
Affected: 14.18
Affected: 14.19
Affected: 14.20.0
    cpe:2.3:a:efm:iptime_t24000m:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-78167 (GCVE-0-2026-78167)

Vulnerability from cvelistv5 – Published: 2026-08-24 01:15 – Updated: 2026-08-24 18:00
VLAI
Title
EFM ipTIME T16000M Session Validation httpcon_check_session_url improper authentication
Summary
A weakness has been identified in EFM ipTIME T16000M 14.20.2. The impacted element is the function httpcon_check_session_url of the component Session Validation Handler. This manipulation causes improper authentication. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 17:59 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
URL Tags
https://vuldb.com/vuln/394556 vdb-entrytechnical-description
https://vuldb.com/vuln/394556/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-78167 third-party-advisory
https://vuldb.com/submit/874154 third-party-advisory
https://vuldb.com/submit/874302 third-party-advisory
https://github.com/AdminSafe/CVE/issues/2 issue-tracking
https://github.com/AdminSafe/CVE/issues/3 exploitissue-tracking
Impacted products
Vendor Product Version
EFM ipTIME T16000M Affected: 14.20.2
    cpe:2.3:a:efm:iptime_t16000m:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-78154 (GCVE-0-2026-78154)

Vulnerability from cvelistv5 – Published: 2026-08-23 23:30 – Updated: 2026-08-25 08:26
VLAI

** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: The endpoint is public on purpose and the invitation code is the credential. This is the standalone SDK onboarding path for mobile apps that have no backend of their own: a developer generates a code via the authenticated dashboard endpoint, the user types it into the app, and it's redeemed for SDK-scoped tokens.

Show details on NVD website

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CVE-2026-77567 (GCVE-0-2026-77567)

Vulnerability from cvelistv5 – Published: 2026-08-24 20:10 – Updated: 2026-08-27 14:17
VLAI
Title
Filament: App-based MFA can be bypassed when recovery codes are enabled
Summary
Filament is a collection of full-stack components for accelerated Laravel development. Prior to versions 4.12.0 and 5.7.0, incorrect challenge-form required-field handling allows app-based multi-factor authentication to be bypassed when recovery codes are enabled. Email-based multi-factor authentication is not affected. This issue is fixed in versions 4.12.0 and 5.7.0.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 14:17 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7702 records in the last 180 days details
Impacted products
Vendor Product Version
filamentphp filament Affected: >= 4.0.0, < 4.12.0
Affected: >= 5.0.0, < 5.7.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-77244 (GCVE-0-2026-77244)

Vulnerability from cvelistv5 – Published: 2026-09-22 17:49 – Updated: 2026-09-23 14:38
VLAI
Title
[mcp-atlassian] Authentication bypass in HTTP transport: AtlassianOpaqueTokenVerifier accepts any non-empty token
Summary
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, the HTTP transport accepts requests without a verified user identity and downstream fetcher construction falls back to the operator's globally configured Jira or Confluence credentials. A network client that can reach the MCP endpoint can invoke Atlassian tools as the operator, including read and write operations available to that account. The advisory traces the vulnerable input and processing flow through UserTokenMiddleware, AtlassianOpaqueTokenVerifier, _get_fetcher, and streamable-http, which identify the affected entry points, controls, and code paths. This issue is fixed in version 0.22.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 18:55 UTC
CWE
  • CWE-287 - Improper Authentication
  • CWE-303 - Incorrect Implementation of Authentication Algorithm
  • CWE-862 - Missing Authorization
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7702 records in the last 180 days details
Impacted products
Vendor Product Version
sooperset mcp-atlassian Affected: < 0.22.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-77194 (GCVE-0-2026-77194)

Vulnerability from cvelistv5 – Published: 2026-09-01 11:31 – Updated: 2026-09-01 17:50
VLAI
Title
Simple Membership <= 4.8.1 - Unauthenticated Authentication Bypass to Administrator Account Takeover via Multisite Identity Binding
Summary
The Simple Membership plugin for WordPress is vulnerable to Authentication Bypass leading to Administrator Account Takeover in versions up to, and including, 4.8.0. This is due to improper identity verification during the public registration flow in WordPress Multisite environments, where the plugin binds new Simple Membership records to existing global WordPress users based solely on matching username and email, without requiring password verification or ownership proof, and fails to properly detect Administrator roles on child sites. This makes it possible for unauthenticated attackers to take over Administrator accounts on child sites in a Multisite network by registering a Simple Membership account with a victim's credentials on a site where public registration is enabled, then updating the victim's global WordPress password through the profile edit functionality. The vulnerability was partially patched in version 4.8.1.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 17:50 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
Impacted products
Vendor Product Version
wpinsider-1 Simple Membership Affected: 0 , ≤ 4.8.1 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-76338 (GCVE-0-2026-76338)

Vulnerability from cvelistv5 – Published: 2026-08-19 21:34 – Updated: 2026-08-27 16:24
VLAI
Title
Improper Authentication through REST API Distributed Search Token Requests in Splunk Enterprise
Summary
In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user who has access to a trusted distributed search private key could forge an administrative session token, access all relevant data, affect system integrity, and disrupt service availability. The vulnerability is possible because the distributed search authentication token endpoint does not require a signed request to identify a configured search peer, allowing the request to fall back to shared local key material. For more information see About distributed search (https://help.splunk.com/en/splunk-enterprise/administer/distributed-search/10.4/overview-of-distributed-search/about-distributed-search) and authentication.conf (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/configuration-file-reference/10.4.2-configuration-file-reference/authentication.conf) in Splunk documentation.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 03:56 UTC
CWE
  • CWE-287 - When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
Assigner
cisco CNA under the mitre root
CNA scorecard C 66/100 over 377 records in the last 180 days details
Impacted products
Vendor Product Version
Splunk Splunk Enterprise Affected: 10.4 , < 10.4.2 (custom)
Affected: 10.2 , < 10.2.6 (custom)
Affected: 10.0 , < 10.0.9 (custom)
Affected: 9.4 , < 9.4.14 (custom)
Create a notification for this product.
Date Public
2026-08-19 00:00
Show details on NVD website

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CVE-2026-76187 (GCVE-0-2026-76187)

Vulnerability from cvelistv5 – Published: 2026-09-16 09:10 – Updated: 2026-09-17 19:21
VLAI
Title
Apache Airflow Keycloak provider: Any realm client's credentials mint an Airflow session JWT
Summary
Apache Airflow Keycloak provider: the unauthenticated token endpoint accepts a client-credentials grant for any confidential client registered in the Keycloak realm, not only the client configured for Airflow. No allowlist restricts which client ids may authenticate, so the credentials of an unrelated application that happens to share the realm are valid Airflow login credentials, and Airflow mints a signed session token for that application's service account. The endpoint also answers unauthenticated credential guesses against Keycloak under Airflow's identity. Affects deployments using the Keycloak auth manager whose realm is shared with other confidential clients. The attacker needs valid credentials for any one of those clients, not for Airflow. Resource authorization is still evaluated per subject, so the access gained is whatever that service account holds, plus any endpoint gated only on being authenticated. Users of apache-airflow-providers-keycloak are recommended to upgrade to version 0.10.0 or later, which accepts only the configured client on that grant.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 19:21 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 943 records in the last 180 days details
Impacted products
Show details on NVD website

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CVE-2026-76009 (GCVE-0-2026-76009)

Vulnerability from cvelistv5 – Published: 2026-09-09 05:31 – Updated: 2026-09-09 14:01
VLAI
Title
Next-Cart Store to WooCommerce Migration <= 3.9.8 - Unauthenticated Authentication Bypass via Default '__token__' Fallback in REST Migration Endpoint
Summary
The Next-Cart Store to WooCommerce Migration plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 3.9.8 via the `NCWM_Kitconnect::run()` function. This is due to the plugin registering the `/wp-json/next_cart/v1/migration` REST route with `permission_callback` set to `__return_true` and relying on a hardcoded fallback value of `__token__` in `get_option('nextcart_token', '__token__')` when the `nextcart_token` option has not yet been written to the database. This makes it possible for unauthenticated attackers to bypass authentication to the migration endpoint by supplying the literal string `__token__` as the token, gaining access to privileged handlers that pass attacker-controlled SQL directly to `$wpdb->query()` and `$wpdb->get_results()` — enabling arbitrary SQL execution including administrator account creation — and pass an attacker-controlled path to `unlink()`, enabling arbitrary file deletion and full site takeover. The hardcoded fallback is reachable whenever the `nextcart_token` option has not yet been populated, which occurs after WP-CLI, network, or programmatic plugin activation without a subsequent authenticated `wp-admin` visit, as token generation is deferred to `admin_init` via `register_settings()`.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 14:01 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
Impacted products
Show details on NVD website

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CVE-2026-75973 (GCVE-0-2026-75973)

Vulnerability from cvelistv5 – Published: 2026-09-23 11:14 – Updated: 2026-09-23 18:10
VLAI
Title
Apache Tomcat: Cross-context authentication mix-up with Jakarta Authentication configured
Summary
Improper Authentication vulnerability in Apache Tomcat. When Jakarta Authentication was configured with SimpleAuthConfigProvider as the default provider and multiple web application used that provider, the realm for the first web application to authenticate a request would be used for all web applications. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M4 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fixes the issue.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 15:28 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 943 records in the last 180 days details
Impacted products
Vendor Product Version
Apache Software Foundation Apache Tomcat Affected: 11.0.0-M1 , ≤ 11.0.25 (semver)
Affected: 10.1.0-M1 , ≤ 10.1.59 (semver)
Affected: 9.0.0.M4 , ≤ 9.0.121 (semver)
Affected: 8.5.0 , ≤ 8.5.100 (semver)
Unaffected: 0 , ≤ 7.0.109 (semver)
Create a notification for this product.
Credits
Show details on NVD website

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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.