Common Weakness Enumeration
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.
6643 vulnerabilities reference this CWE, most recent first.
CVE-2026-80218 (GCVE-0-2026-80218)
Vulnerability from cvelistv5 – Published: 2026-09-17 13:09 – Updated: 2026-09-17 18:28
VLAI
EPSS
VEX
Title
Sign-in token minted for one resource accepted by another in AshAuthentication
Summary
Improper Authentication vulnerability in team-alembic AshAuthentication allows an attacker holding a sign-in token for one authenticated resource to be signed in as a user of a different resource.
AshAuthentication.Strategy.Password.SignInWithTokenPreparation.extract_primary_keys_from_subject/2 parses the JWT sub claim (for example user?id=1) with URI.parse/1 and keeps only its query string, discarding the path segment that names the subject the token was issued for. Nothing else restores that binding: AshAuthentication.Jwt.verify/3 checks the signature, exp, nbf, jti and the library-version claims, the purpose check only requires sign_in, and the remaining comparison is over primary-key field names, which are identical across resources. The WebAuthn sign-in and remember-me preparations carry copies of the same helper and drop the path in the same way. The magic link sign-in path pins the subject name against the resource and is not affected.
This issue affects ash_authentication: from 3.10.5 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:28 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| team-alembic | ash_authentication |
Affected:
3.10.5 , < 4.15.0
(semver)
Affected: 5.0.0-rc.0 , < 5.0.0-rc.14 (semver) cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:* |
|
| team-alembic | ash_authentication |
Affected:
eca8cadea0f1595ed2c10a0c177b1da9aa9e5269 , < *
(git)
cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:* |
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CVE-2026-80192 (GCVE-0-2026-80192)
Vulnerability from cvelistv5 – Published: 2026-08-25 23:19 – Updated: 2026-08-29 11:48
VLAI
EPSS
VEX
Title
better-auth SSO before 1.6.27 Domain Ownership Authentication Bypass
Summary
@better-auth/sso before 1.6.27 (and before 1.4.8 in the 1.4.x line and before 1.7.0-rc.5 in the 1.7 prerelease line) contains two domain-ownership flaws. When domain verification is disabled, automatic organization assignment accepts unverified provider domains, allowing an authenticated organization owner/administrator to register an SSO provider for an arbitrary domain and have users with matching email domains added to the attacker's organization with default member permissions. When domain verification is enabled, a race condition between the verify-domain and update-provider endpoints can apply completed DNS proof to a different domain; combined with implicit account linking, this can link an attacker-controlled identity provider to an existing user account. Exploitation requires the SSO plugin (and, for the org-assignment path, the organization plugin) with the relevant configuration enabled.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 13:43 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/better-auth/better-auth/securi… | vendor-advisory |
| https://www.vulncheck.com/advisories/better-auth-… | third-party-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| better-auth | sso |
Affected:
1.4.8-beta.1 , < 1.4.8
(semver)
Unaffected: 1.4.8 (semver) |
|
| better-auth | sso |
Affected:
1.4.9 , < 1.6.27
(semver)
Unaffected: 1.6.27 (semver) |
|
| better-auth | sso |
Affected:
1.7.0-beta.0 , < 1.7.0-rc.5
(semver)
Unaffected: 1.7.0-rc.5 (semver) |
Date Public
2026-08-11 00:00
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CVE-2026-80128 (GCVE-0-2026-80128)
Vulnerability from cvelistv5 – Published: 2026-09-07 13:40 – Updated: 2026-09-08 13:12
VLAI
EPSS
VEX
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 protection mechanism bypass.
Severity
6.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 13:12 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-in/00050342… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Secure Connect Gateway 5.0 - Application |
Affected:
0 , < 5.36.00.00 or later
(semver)
|
|
| Dell | Secure Connect Gateway 5.0 - Appliance |
Affected:
0 , < Secure Connect Gateway 5.0 - Appliance
(semver)
|
Date Public
2026-08-31 06:30
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CVE-2026-80099 (GCVE-0-2026-80099)
Vulnerability from cvelistv5 – Published: 2026-09-09 08:28 – Updated: 2026-09-09 16:02
VLAI
EPSS
VEX
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)
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
References
11 references
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Newfold | WP Plugin Web |
Affected:
0 , ≤ 2.3.5
(semver)
|
|
| Newfold | WP Plugin Crazy Domains |
Affected:
0 , ≤ 2.5.2
(semver)
|
|
| Newfold | WP Module Data |
Affected:
0 , ≤ 2.9.7
(semver)
|
|
| Newfold | WP Plugin Hostgator |
Affected:
0 , ≤ 3.2.0
(semver)
|
|
| Newfold | WP Plugin Bluehost |
Affected:
0 , ≤ 4.19.0
(semver)
|
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CVE-2026-80097 (GCVE-0-2026-80097)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:13 – Updated: 2026-09-18 20:41
VLAI
EPSS
VEX
Title
Microsoft Authenticator Elevation of Privilege Vulnerability
Summary
Improper authentication in Microsoft Authenticator allows an unauthorized attacker to elevate privileges locally.
Severity
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
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Authenticator for Android |
Affected:
6.0.0 , < 6.2606.4246
(custom)
cpe:2.3:a:microsoft:authenticator:*:*:*:*:*:*:*:* |
Date Public
2026-09-08 14:00
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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
EPSS
VEX
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)
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
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-in/00050342… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Secure Connect Gateway 5.0 - Application |
Affected:
0 , < 5.36.00.00 or later
(semver)
|
|
| Dell | Secure Connect Gateway 5.0 - Appliance |
Affected:
0 , < 5.36.00.16 or later
(semver)
|
Date Public
2026-08-31 06:30
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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
EPSS
VEX
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)
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
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-us/00050145… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Power Protect Cyber Recovery |
Affected:
0 , < 20.3.0.0
(semver)
|
|
| Dell | Cyber Recovery |
Affected:
0 , < osupdate-15.4.0-19.bin
(custom)
Affected: 0 , < osupdate-15.6.1-1.bin (custom) |
Date Public
2026-08-24 18:30
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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
EPSS
VEX
Title
Alluxio through 2.9.5 S3 REST Proxy Authentication Bypass via Unverified Request Signature
Summary
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Severity
9.8 (Critical)
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
References
4 references
| URL | Tags |
|---|---|
| https://github.com/Alluxio/alluxio | product |
| https://github.com/Alluxio/alluxio/issues/18755 | issue-tracking |
| https://github.com/Alluxio/alluxio/blob/v2.9.5/co… | technical-description |
| https://www.vulncheck.com/advisories/alluxio-thro… | third-party-advisory |
Impacted products
Date Public
2026-06-29 00:00
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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
EPSS
VEX
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
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
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/394941 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/394941/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-78885 | third-party-advisory |
| https://vuldb.com/submit/886931 | third-party-advisory |
| https://github.com/mauriceboe/TREK/security/advis… | related |
| https://github.com/liketrek/TREK/releases/tag/v3.1.0 | patch |
Impacted products
1 product
| 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:*:*:*:*:*:*:*:* |
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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
EPSS
VEX
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
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
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/394939 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/394939/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-78863 | third-party-advisory |
| https://vuldb.com/submit/886929 | third-party-advisory |
| https://github.com/mauriceboe/TREK/security/advis… | related |
| https://github.com/liketrek/TREK/releases/tag/v3.1.0 | patch |
Impacted products
1 product
| 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:*:*:*:*:*:*:*:* |
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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.