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.

6974 vulnerabilities reference this CWE, most recent first.

CVE-2026-106488 (GCVE-0-2026-106488)

Vulnerability from cvelistv5 – Published: 2026-10-06 20:38 – Updated: 2026-10-07 18:23
VLAI
Title
Backstage: Improper authentication in the OIDC provider
Summary
Backstage is an open framework for building developer portals. Prior to 0.4.20, the @backstage/plugin-auth-backend-module-oidc-provider package is affected by improper authentication in the oidc provider. Deployments using OIDC email-based identity resolution with a provider that permits unverified email addresses may allow an authenticated provider user to assume another catalog identity. This may grant access and permissions associated with that user. No direct availability impact is demonstrated. This issue is fixed in version 0.4.20.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 2026-10-07 18:23 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-106460 (GCVE-0-2026-106460)

Vulnerability from cvelistv5 – Published: 2026-10-06 20:22 – Updated: 2026-10-09 01:48
VLAI
Title
Backstage: Explicit negative email verification can be ignored during shared OAuth profile normalization
Summary
Backstage is an open framework for building developer portals. From 0.3.0 until 0.6.15 and 0.7.5, the @backstage/plugin-auth-node package did not consistently honor explicit negative email verification during shared OAuth profile normalization. The affected paths include a selected profile email marked verified: false, a matching raw provider email marked email_verified: false, and an email obtained only from an ID token marked email_verified: false. Exploitation requires an admitted identity-provider user who can supply or change an unverified email and a deployment that uses the selected profile email to resolve catalog identities. The verification metadata must apply to the selected email; an absent email_verified claim alone is not affected. In an affected configuration, the user may assume another catalog identity and obtain its associated access and permissions. This issue is fixed in versions 0.6.15 and 0.7.5.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/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 2026-10-09 01:47 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
backstage backstage Affected: >= 1.18.0, < 1.49.7
Affected: >= 1.50.0-next.0, < 1.54.7
Create a notification for this product.
@backstage plugin-auth-node Affected: >= 0.3.0, < 0.6.15
Affected: >= 0.7.0, < 0.7.5
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-106457 (GCVE-0-2026-106457)

Vulnerability from cvelistv5 – Published: 2026-10-06 20:13 – Updated: 2026-10-07 15:09
VLAI
Title
Backstage: Insufficient audience validation in the Cloudflare Access auth provider
Summary
Backstage is an open framework for building developer portals. From 0.1.0 until 0.5.0, the @backstage/plugin-auth-backend-module-cloudflare-access-provider package is affected by insufficient audience validation in the cloudflare access auth provider. The Cloudflare Access auth provider verifies a token's signature and team issuer, but affected versions do not verify that the token was issued for the Backstage application. A user holding a valid token for another Access application in the same Cloudflare Zero Trust team may therefore be able to authenticate to Backstage if that token reaches the auth endpoint without the Backstage application's audience already being enforced upstream. Cloudflare Access normally evaluates the protected application before forwarding requests. This issue is fixed in version 0.5.0.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/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 2026-10-07 15:06 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-105832 (GCVE-0-2026-105832)

Vulnerability from cvelistv5 – Published: 2026-10-08 14:10 – Updated: 2026-10-08 14:48
VLAI
Title
EspoCRM before 10.0.6 Two-Factor Authentication Bypass on Unauthenticated Routes
Summary
EspoCRM before 10.0.6 contains an authentication bypass vulnerability that accepts a login stopped at the second factor on routes not requiring authentication. Attackers knowing a 2FA-enabled user's username and password can skip the second factor to read config parameters not exposed publicly.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 14:48 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6373 records in the last 180 days details
References
Impacted products
Vendor Product Version
espocrm espocrm Affected: 0 , < 10.0.6 (semver)
Unaffected: 10.0.6 (semver)
    cpe:2.3:a:espocrm:espocrm:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-21 00:00
Credits
Humbertosp
Show details on NVD website
To clipboard 

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CVE-2026-105704 (GCVE-0-2026-105704)

Vulnerability from cvelistv5 – Published: 2026-10-06 04:15 – Updated: 2026-10-06 12:52 X_Freeware
VLAI
Title
SourceCodester Drug Recommendation System Auth Guard improper authentication
Summary
A vulnerability was identified in SourceCodester Drug Recommendation System 1.0. This affects an unknown function of the component Auth Guard. Such manipulation of the argument user_id leads to improper authentication. The attack can be executed remotely. The exploit is publicly available and might be used.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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 2026-10-06 12:52 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3832 records in the last 180 days details
References
Impacted products
Vendor Product Version
SourceCodester Drug Recommendation System Affected: 1.0
    cpe:2.3:a:sourcecodester:drug_recommendation_system:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
BI1IHA (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-105672 (GCVE-0-2026-105672)

Vulnerability from cvelistv5 – Published: 2026-10-08 22:21 – Updated: 2026-10-15 15:18
VLAI
Title
Unauthenticated JSON API Authorization Bypass Vulnerability in TP-Link Tapo C325WB
Summary
TP-Link Tapo C325WB V2 contains an unauthenticated authorization bypass vulnerability in the HTTPS JSON API dispatcher on TCP port 443. An attacker on the adjacent network can append an onboarding-scoped object to a JSON request to bypass session verification and invoke privileged actions without authentication.  Successful exploitation may allow an unauthenticated adjacent-network attacker to access live video and audio, modify device settings, and obtain sensitive device information or secrets.
Severity
8.7 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 15:18 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
TPLink CNA under the mitre root
CNA scorecard B 88/100 over 97 records in the last 180 days details
References
Impacted products
Vendor Product Version
TP-Link Systems Inc. Tapo C325WB v2 Affected: 0 , < V2_1.3.3 Build 260914 (custom)
Create a notification for this product.
Credits
Andrey Charikov, Check Point Research
Show details on NVD website
To clipboard 

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CVE-2026-105640 (GCVE-0-2026-105640)

Vulnerability from cvelistv5 – Published: 2026-10-05 18:11 – Updated: 2026-10-05 18:33
VLAI
Title
Plane: Account Takeover via Unverified OAuth Email Match (Gitea, self-managed GitLab)
Summary
Plane is an open-source project management tool. Prior to 1.4.0, Plane trusts email addresses returned by Gitea OAuth and by self-managed GitLab OAuth deployments where email confirmation is disabled, without verifying that the provider authenticated ownership of the address. An attacker can set an OAuth identity's unverified provider email to a victim's address, which Plane matches directly to the victim's existing local account. The attacker can then log in to the victim's Plane account without knowing the victim's password. GitHub, GitLab.com, and Google are not affected because those providers return verified email addresses. This issue is fixed in 1.4.0.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 18:32 UTC
CWE
  • CWE-287 - Improper Authentication
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
makeplane plane Affected: < 1.4.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-105639 (GCVE-0-2026-105639)

Vulnerability from cvelistv5 – Published: 2026-10-05 18:10 – Updated: 2026-10-06 14:52
VLAI
Title
Plane: Pre-auth workspace invitation hijack via email-squat and self-served invitation token leak in Plane
Summary
Plane is an open-source project management tool. Prior to 1.4.0, Plane's signup flow creates a logged-in User row for any submitted email without an out-of-band ownership check, while User.email is unique=True. The authenticated user can call GET /api/users/me/workspaces/invitations/, which returns each WorkspaceMemberInvite whose email matches request.user.email. WorkSpaceMemberInviteSerializer uses fields = "all", exposing the token that protects the invitation join endpoint. An unauthenticated attacker who knows a target's email can register an account using that address, enumerate pending invitations, and accept an invitation as the target, joining a workspace at the invited role. The term pre-auth describes the attacker's initial state: the attacker has no credential before signup, while the enumeration and join requests use the session created by that signup. This issue is fixed in 1.4.0.
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 2026-10-06 14:37 UTC
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-287 - Improper Authentication
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
makeplane plane Affected: < 1.4.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-105486 (GCVE-0-2026-105486)

Vulnerability from cvelistv5 – Published: 2026-10-06 01:30 – Updated: 2026-10-06 17:40 X_Open Source
VLAI
Title
OSSRS srs System API api.go systemAPI.Run missing authentication
Summary
A vulnerability was detected in OSSRS srs up to 7.0-a1. This affects the function systemAPI.Run of the file internal/proxy/api.go of the component System API. Performing a manipulation results in missing authentication. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading to version 8.0-d0 mitigates this issue. The patch is named bb5fde228f4ca5bd26d96368b61f6e0c21df51df. The affected component should be upgraded.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 17:06 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3832 records in the last 180 days details
References
Impacted products
Vendor Product Version
OSSRS srs Affected: 7.0-a1
Unaffected: 8.0-d0
    cpe:2.3:a:ossrs:srs:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
geochen (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-105307 (GCVE-0-2026-105307)

Vulnerability from cvelistv5 – Published: 2026-10-05 11:15 – Updated: 2026-10-05 15:28
VLAI
Title
Casdoor API Endpoint authz_filter.go ApiFilter missing authentication
Summary
A vulnerability was detected in Casdoor up to 3.161.1. Affected is the function ApiFilter of the file routers/authz_filter.go of the component API Endpoint. Performing a manipulation results in missing authentication. The attack can be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 15:25 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3832 records in the last 180 days details
References
URL Tags
https://vuldb.com/vuln/413512 vdb-entrytechnical-description
https://vuldb.com/vuln/413512/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-105307 third-party-advisory
https://vuldb.com/submit/951430 third-party-advisory
Impacted products
Vendor Product Version
n/a Casdoor Affected: 3.161.0
Affected: 3.161.1
    cpe:2.3:a:casdoor:casdoor:*:*:*:*:*:*:*:*
Credits
Smallblack (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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      "references": [
        {
          "name": "VDB-413512 | Casdoor API Endpoint authz_filter.go ApiFilter missing authentication",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/413512"
        },
        {
          "name": "VDB-413512 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/413512/cti"
        },
        {
          "name": "CVE-2026-105307 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-105307"
        },
        {
          "name": "Submit #951430 | Casdoor 3.161.1 Missing Authentication (CWE-306)",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/951430"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-10-05T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-10-05T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-10-05T08:07:02.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Casdoor API Endpoint authz_filter.go ApiFilter missing authentication",
      "x_generator": [
        "VulDB PVTS v202610"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-105307",
    "datePublished": "2026-10-05T11:15:11.014Z",
    "dateReserved": "2026-10-05T06:01:53.751Z",
    "dateUpdated": "2026-10-05T15:28:37.748Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
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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