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.
6974 vulnerabilities reference this CWE, most recent first.
CVE-2026-103264 (GCVE-0-2026-103264)
Vulnerability from cvelistv5 – Published: 2026-10-01 10:42 – Updated: 2026-10-01 13:32
VLAI
EPSS
VEX
Title
Fleet before 4.87.0 Authentication Bypass via Device Identifiers
Summary
Fleet versions before 4.87.0 contain an authentication bypass vulnerability in the device API that accepts hostnames and hardware serials as authentication tokens in addition to device UUIDs. Unauthenticated attackers who know or guess these non-secret identifiers can authenticate as iOS/iPadOS hosts to read device data and trigger device-scoped actions including software installation and MDM migration.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:30 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/fleetdm/fleet/security/advisor… | vendor-advisory |
| https://www.vulncheck.com/advisories/fleet-before… | third-party-advisory |
Impacted products
Date Public
2026-09-15 00:00
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CVE-2026-102899 (GCVE-0-2026-102899)
Vulnerability from cvelistv5 – Published: 2026-10-14 18:57 – Updated: 2026-10-15 14:23
VLAI
EPSS
VEX
Title
Sentry: Improper authentication on SAML SSO process allows user identity linking
Summary
Sentry is an application monitoring and error tracking platform. From 26.5.0 until 26.7.2, the SAML SSO identity-linking flow allows an attacker who controls a SAML identity provider to socially engineer an authenticated user into opening a malicious URL, link the attacker's identity to the victim's Sentry account, and take control of that account. The attack requires a browser that accepts the cross-site cookie context, including Firefox with SameSite=None cookies or Chromium with third-party cookies enabled. Sentry SaaS received the remediation on July 27, 2026, and self-hosted Sentry is fixed in version 26.7.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 14:22 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/getsentry/sentry/security/advi… | x_refsource_CONFIRM |
| https://github.com/getsentry/sentry/pull/120467 | x_refsource_MISC |
| https://github.com/getsentry/sentry/pull/120702 | x_refsource_MISC |
| https://github.com/getsentry/sentry/commit/9c982d… | x_refsource_MISC |
| https://github.com/getsentry/sentry/commit/ec963d… | x_refsource_MISC |
| https://github.com/getsentry/self-hosted/releases… | x_refsource_MISC |
| https://github.com/getsentry/sentry/releases/tag/26.7.2 | x_refsource_MISC |
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CVE-2026-102893 (GCVE-0-2026-102893)
Vulnerability from cvelistv5 – Published: 2026-10-14 15:49 – Updated: 2026-10-15 19:06
VLAI
EPSS
VEX
Title
Zulip: OpenID Connect authentication ignores the email_verified claim
Summary
Zulip is an open-source team collaboration tool. In Zulip Server versions through 12.1, GenericOpenIdConnectBackend matches the identity provider email claim to an active account's delivery_email without rejecting an explicitly false email_verified claim. If a configured identity provider returns an email address that the authenticating user does not control together with email_verified=false, Zulip can log the user into the existing account for that address. Exploitation requires a misconfigured trusted identity provider, and deployments whose authoritative identity provider only emits email addresses controlled by the authenticating user are not affected. This issue is fixed in version 12.2.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 19:05 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/zulip/zulip/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/zulip/zulip/pull/39913 | x_refsource_MISC |
| https://github.com/zulip/zulip/commit/68d2d9defa3… | x_refsource_MISC |
| https://github.com/zulip/zulip/commit/b40f191a8c7… | x_refsource_MISC |
| https://github.com/zulip/zulip/releases/tag/12.2 | x_refsource_MISC |
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CVE-2026-102631 (GCVE-0-2026-102631)
Vulnerability from cvelistv5 – Published: 2026-10-15 16:42 – Updated: 2026-10-16 20:16
VLAI
EPSS
VEX
Title
authd: Account takeover via username fallback in identity matching after IdP email reassignment
Summary
In authd before 0.7.1, the user identity matching in UpdateUser (internal/users/manager.go) resolves an incoming login by the broker-scoped provider ID, but falls back to matching the username when the provider ID does not belong to any known user, and does not reject a conflicting non-empty provider ID. If an identity provider reassigns an email address, which authd uses as the username, to a new account, the new account inherits the previous user's local UID and home directory on its next login. This allows the new user to access and modify files belonging to the previous user, including credentials such as SSH keys and cloud API tokens, and silently rebinds the local account record to the new identity. As a mitigation, administrators should lock or delete the previous user's local authd account when the corresponding IdP account is removed.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 20:16 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/canonical/authd/pull/2067 | patch |
| https://bugs.launchpad.net/ubuntu/+source/authd/+… | issue-tracking |
| https://ubuntu.com/security/CVE-2026-102631 | vendor-advisory |
Impacted products
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CVE-2026-102369 (GCVE-0-2026-102369)
Vulnerability from cvelistv5 – Published: 2026-10-01 17:42 – Updated: 2026-10-01 18:08
VLAI
EPSS
VEX
Title
Unauthenticated Remote Code Execution via MacTool Command Injection in TP-Link Tapo C120 & C200
Summary
Tapo C120 v1 and C200 V5
do not adequately protect login challenge data or sanitize
attacker-controlled input processed by the MacTool handler. An unauthenticated
attacker on the same local network can replay login challenge data to obtain an
administrative session, enable a privileged service that becomes accessible
after a reboot, and submit crafted input to execute arbitrary commands within
the device management process.
Successful
exploitation may allow arbitrary command execution on the camera and compromise
the confidentiality, integrity, and availability of the affected device.
Exploitation requires access from the same local network, replay of the login
challenge data, activation of the privileged service, and a device reboot.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 18:07 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
5 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| TP-Link Systems Inc. | Tapo C200 v5 |
Affected:
0 , < V5_1.4.6 Build 260709 Rel.27675n
(custom)
|
|
| TP-Link Systems Inc. | Tapo C120 v1 |
Affected:
0 , < V1_1.9.4 Build 260813 Rel.79754n
(custom)
|
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CVE-2026-102364 (GCVE-0-2026-102364)
Vulnerability from cvelistv5 – Published: 2026-09-28 23:34 – Updated: 2026-09-29 17:34
VLAI
EPSS
VEX
Title
mall4j through 4.0 Improper Authentication Accepts Storefront Tokens on Admin API
Summary
mall4j through 4.0 fails to validate the sysType field in sa-token sessions, allowing storefront customers to authenticate as back-office users by reusing their session tokens. Attackers can register on the public storefront and use their customer session token to access admin endpoints lacking @PreAuthorize permission checks, including menu listings, file uploads, and configuration endpoints.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 17:34 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/LinYuanyi1/cve-request-poc/blo… | exploit |
| https://github.com/LinYuanyi1/cve-request-poc/blo… | exploit |
| https://github.com/gz-yami/mall4j | product |
| https://github.com/gz-yami/mall4j/blob/ffc672fc1a… | technical-description |
| https://www.vulncheck.com/advisories/mall4j-throu… | third-party-advisory |
Date Public
2026-09-19 00:00
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CVE-2026-102248 (GCVE-0-2026-102248)
Vulnerability from cvelistv5 – Published: 2026-09-29 03:30 – Updated: 2026-09-29 17:00
VLAI
EPSS
VEX
Title
Rebuild Login Endpoint login improper authentication
Summary
A vulnerability was identified in Rebuild up to 4.4.7/4.5.0-beta5. This affects an unknown part of the file /user/login of the component Login Endpoint. The manipulation leads to improper authentication. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 16:59 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/411150 | vdb-entry |
| https://vuldb.com/vuln/411150/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-102248 | third-party-advisory |
| https://vuldb.com/submit/933708 | third-party-advisory |
| https://github.com/ASantsSec/CVE/issues/25 | exploitissue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Rebuild |
Affected:
4.4.0
Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.4.4 Affected: 4.4.5 Affected: 4.4.6 Affected: 4.4.7 Affected: 4.5.0-beta1 Affected: 4.5.0-beta2 Affected: 4.5.0-beta3 Affected: 4.5.0-beta4 Affected: 4.5.0-beta5 cpe:2.3:a:rebuild:rebuild:*:*:*:*:*:*:*:* |
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CVE-2026-102245 (GCVE-0-2026-102245)
Vulnerability from cvelistv5 – Published: 2026-09-29 03:00 – Updated: 2026-10-01 15:39
VLAI
EPSS
VEX
Title
MODSetter SurfSense circleback Endpoint circleback_webhook_route.py missing authentication
Summary
A weakness has been identified in MODSetter SurfSense up to 2.0.3. The affected element is an unknown function of the file surfsense_backend/app/routes/circleback_webhook_route.py of the component circleback Endpoint. Executing a manipulation can lead to missing authentication. The attack can be launched remotely. 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.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 15:39 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/411143 | vdb-entry |
| https://vuldb.com/vuln/411143/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-102245 | third-party-advisory |
| https://vuldb.com/submit/933653 | third-party-advisory |
| https://gist.github.com/DReazer/1e476832e48bcdb2b… | exploit |
Impacted products
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CVE-2026-102128 (GCVE-0-2026-102128)
Vulnerability from cvelistv5 – Published: 2026-09-30 20:14 – Updated: 2026-10-01 13:37
VLAI
EPSS
VEX
Title
Kiteworks Email Protection Gateway Improper Authentication
Summary
An identity-verification weakness in Kiteworks Email Protection Gateway allowed the gateway to act on the Kiteworks platform on behalf of a user it had not authenticated, and to provision a platform account for an identity it did not already know. A remote, unauthenticated sender could potentially exploit this to obtain control of a platform account.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:28 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kiteworks/security-advisories/… | vendor-advisory |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kiteworks | Email Protection Gateway |
Affected:
0 , < 9.5.1
(custom)
Unaffected: 9.5.1 |
Date Public
2026-09-30 00:00
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CVE-2026-102106 (GCVE-0-2026-102106)
Vulnerability from cvelistv5 – Published: 2026-09-30 20:24 – Updated: 2026-10-01 13:37
VLAI
EPSS
VEX
Title
Kiteworks Email Protection Gateway improper authentication
Summary
Improper authentication in a Kiteworks Email Protection Gateway administrative service. An administrative service in Kiteworks Email Protection Gateway did not consistently enforce administrator authentication, so the required password check could be bypassed. An attacker who referenced a valid administrator account could potentially create, modify, or delete internal users and managed domains and change their security-feature configuration without authenticating; deleting a managed domain also removes its user accounts and could lock administrators out of the gateway.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:14 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kiteworks/security-advisories/… | vendor-advisory |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kiteworks | Email Protection Gateway |
Affected:
0 , < 9.5.0
(custom)
Unaffected: 9.5.0 |
Date Public
2026-09-30 00:00
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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.