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.

2086 vulnerabilities reference this CWE, most recent first.

CVE-2026-71326 (GCVE-0-2026-71326)

Vulnerability from cvelistv5 – Published: 2026-08-06 16:34 – Updated: 2026-08-08 02:12

Title

Traefik: BasicAuth singleflight key collision allows authenticated identity spoofing

Summary

Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.6.25 and 3.7.10, Traefik's BasicAuth middleware in pkg/middlewares/auth/basic_auth.go deduplicates concurrent password checks with a singleflight key built from the delimiter-free concatenation of password and secret, allowing an attacker who has a valid credential and the stored hash to authenticate as an unconfigured username when headerField trusts the forwarded identity. This issue is fixed in 3.6.25 and 3.7.10.

Severity

2.1 (Low)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-08 02:12 UTC

CWE

CWE-287 - Improper Authentication

Assigner

GitHub_M CNA

References

5 references

URL	Tags
https://github.com/traefik/traefik/security/advis…	x_refsource_CONFIRM
https://github.com/traefik/traefik/pull/13572	x_refsource_MISC
https://github.com/traefik/traefik/commit/b5ace8e…	x_refsource_MISC
https://github.com/traefik/traefik/releases/tag/v3.6.25	x_refsource_MISC
https://github.com/traefik/traefik/releases/tag/v3.7.10	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
traefik	traefik	Affected: >= 3.6.11, < 3.6.25 Affected: >= 3.7.0, < 3.7.10

Show details on NVD website

JSON

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CVE-2026-71277 (GCVE-0-2026-71277)

Vulnerability from cvelistv5 – Published: 2026-08-05 12:26 – Updated: 2026-08-10 11:46

Title

rust-iot-platform Authentication Bypass via Non-Validated Authorization Header

Summary

rust-iot-platform's AuthToken request-guard implementation (api/src/main.rs) only checks whether the Authorization HTTP header is present, and never validates its value against any session, token store, or signature. Any request carrying an arbitrary non-empty Authorization header (e.g. ) satisfies the guard, granting access to every endpoint protected only by this request guard.

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: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-05 15:56 UTC

CWE

CWE-287

Assigner

TuranSec CNA

References

2 references

URL	Tags
https://github.com/iot-ecology/rust-iot-platform	third-party-advisory
https://github.com/iot-ecology/rust-iot-platform/…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
iot-ecology	rust-iot-platform	Affected: 0 , ≤ * (custom)

Date Public

2026-08-05 12:26

Credits

Alibek Baxtiyorov

Show details on NVD website

JSON

To clipboard

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CVE-2026-70482 (GCVE-0-2026-70482)

Vulnerability from cvelistv5 – Published: 2026-08-04 19:51 – Updated: 2026-11-03 22:13

Title

Open WebUI: Account takeover via OAuth token exchange accepting tokens issued to any client

Summary

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.11.0, when ENABLE_OAUTH_TOKEN_EXCHANGE=True, /oauth/{provider}/token/exchange accepts a raw provider access token and validates it by calling the provider userinfo endpoint without confirming which OAuth client the token was issued to. Anyone holding an access token minted for any client registered with the same provider could exchange it for an Open WebUI session as that token user, including applications the operator does not control and has never authorized. This issue is fixed in 0.11.0.

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/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 2026-08-06 03:55 UTC

CWE

CWE-287 - Improper Authentication

Assigner

GitHub_M CNA

References

4 references

URL	Tags
https://github.com/open-webui/open-webui/security…	x_refsource_CONFIRM
https://github.com/open-webui/open-webui/commit/b…	x_refsource_MISC
https://github.com/open-webui/open-webui/commit/c…	x_refsource_MISC
https://github.com/open-webui/open-webui/releases…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
open-webui	open-webui	Affected: >= 0.8.0, < 0.11.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-69854 (GCVE-0-2026-69854)

Vulnerability from cvelistv5 – Published: 2026-09-08 17:18 – Updated: 2026-10-31 16:16

Title

Spring Cloud Azure Elevation of Privilege Vulnerability

Summary

Improper authentication in Spring Cloud Azure allows an unauthorized attacker to elevate privileges over a network.

Severity

9 (Critical)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/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 2026-09-11 20:42 UTC

CWE

CWE-287 - Improper Authentication

Assigner

microsoft CNA

References

1 reference

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerabi…	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version
Microsoft	Spring Cloud Azure	Affected: 1.0.0 , < 7.4.0 (custom) cpe:2.3:a:microsoft:spring_cloud_azure::::::::

Date Public

2026-09-08 14:00

Show details on NVD website

JSON

To clipboard

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CVE-2026-69191 (GCVE-0-2026-69191)

Vulnerability from cvelistv5 – Published: 2026-10-14 20:33 – Updated: 2026-10-15 13:53

Title

FileRise: Login Method Restriction Bypass via Direct API Access

Summary

FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.21.0, FileRise enforces disableFormLogin, disableBasicAuth, and disableOIDCLogin in the client interface but not consistently in the corresponding server-side authentication flows. A user with otherwise valid credentials for a disabled method can call its backend endpoint directly and authenticate despite the administrator's login-method policy. The flaw does not permit credential-free authentication. This issue is fixed in version 3.21.0.

Severity

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-15 13:52 UTC

CWE

CWE-287 - Improper Authentication

Assigner

GitHub_M CNA

References

3 references

URL	Tags
https://github.com/error311/FileRise/security/adv…	x_refsource_CONFIRM
https://github.com/error311/FileRise/commit/613fd…	x_refsource_MISC
https://github.com/error311/FileRise/releases/tag…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
error311	FileRise	Affected: < 3.21.0

Show details on NVD website

JSON

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CVE-2026-68760 (GCVE-0-2026-68760)

Vulnerability from cvelistv5 – Published: 2026-08-12 15:04 – Updated: 2026-08-12 18:41

Title

Potential remember-me authentication bypass in JFrog Artifactory

Summary

An unauthenticated user may bypass authentication under specific cache conditions.

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-12 18:41 UTC

CWE

CWE-287 - Improper Authentication

Assigner

JFROG CNA

References

2 references

URL	Tags
https://docs.jfrog.com/releases/docs/jfrog-securi…	vendor-advisory
https://docs.jfrog.com/releases/docs/artifactory-…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
jfrog	artifactory	Affected: 0 , < 7.146.35 (custom) Affected: 7.161.0 , < 7.161.16 (custom)

Credits

Ben Morris in collaboration with Claude and Anthropic Research

Show details on NVD website

JSON

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CVE-2026-68573 (GCVE-0-2026-68573)

Vulnerability from cvelistv5 – Published: 2026-10-16 19:32 – Updated: 2026-10-20 17:59

Title

Apache Kylin: Unauthenticated Metastore Cleanup

Summary

Improper Authentication vulnerability in Apache Kylin. Unauthenticated user may access to system cleanup actions. Impact most to the kylin services that are directly exposed to public network, which is not common. In-house kylin deployments are mostly not impacted. This issue affects Apache Kylin: from 4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

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 2026-10-20 17:57 UTC

CWE

CWE-287 - Improper Authentication

Assigner

apache CNA

References

2 references

URL	Tags
https://lists.apache.org/thread.html/4n3qt477rtvw…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/10/16/7

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Kylin	Affected: 4.0.0 , ≤ 5.0.4 (semver)

Credits

Fabian Fleischer MopMonk-AI Wanxin Yin

Show details on NVD website

JSON

To clipboard

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CVE-2026-68569 (GCVE-0-2026-68569)

Vulnerability from cvelistv5 – Published: 2026-08-25 21:59 – Updated: 2026-09-21 11:06

Title

Apache Tomcat: Principal lookup can fail open in some cases

Summary

Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT, SPNEGO) that a user would be authenticated even if the user did not exist in the DataSourceRealm. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120. 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, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.

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 2026-08-26 18:38 UTC

CWE

CWE-287 - Improper Authentication

Assigner

apache CNA

References

2 references

URL	Tags
https://lists.apache.org/thread/8robqo76q0osxgw0b…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/08/26/8

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Tomcat	Affected: 11.0.0-M1 , ≤ 11.0.24 (semver) Affected: 10.1.0-M1 , ≤ 10.1.57 (semver) Affected: 9.0.0.M1 , ≤ 9.0.120 (semver) Affected: 8.5.0 , ≤ 8.5.100 (semver) Affected: 7.0.0 , ≤ 7.0.109 (semver) Unknown: 0 , < 7.0.0 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-67335 (GCVE-0-2026-67335)

Vulnerability from cvelistv5 – Published: 2026-08-01 12:22 – Updated: 2026-08-03 15:38

Title

better-auth before 1.6.2 OAuth State Validation Bypass

Summary

better-auth versions before 1.6.2 fail to validate the OAuth state parameter against the stored nonce when using cookie-backed state storage without PKCE. Attackers can forge the state parameter and supply an attacker-controlled authorization code to create authenticated sessions bound to the attacker's external identity or persistently link attacker accounts to victim profiles.

Severity

6 (Medium)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-03 14:46 UTC

CWE

CWE-287 - Improper Authentication

Assigner

VulnCheck CNA

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

1 product

Vendor	Product	Version
better-auth	better-auth	Affected: 0 , < 1.6.2 (semver) Unaffected: 1.6.2 (semver) cpe:2.3:a:better-auth:better-auth\/oauth-provider::::::node.js::*

Date Public

2026-05-11 00:00

Credits

Jvr2022 alavesa

Show details on NVD website

JSON

To clipboard

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CVE-2026-67327 (GCVE-0-2026-67327)

Vulnerability from cvelistv5 – Published: 2026-08-01 12:22 – Updated: 2026-08-03 18:29

Title

better-auth before 1.6.22 Account Takeover via Magic-Link Email-OTP

Summary

better-auth versions >= 1.1.3 and < 1.6.22 (and pre-release versions >= 1.7.0-beta.0 and < 1.7.0-beta.10) are vulnerable to account takeover via pre-account hijacking on magic-link and email-OTP sign-in when open email/password registration is enabled. An attacker registers an account with the victim's email address and an attacker-chosen password; the account remains unverified. When the legitimate owner later signs in via the magic-link or email-OTP passwordless flow, the account is marked verified without removing the pre-existing password or revoking existing sessions, so the attacker's password remains valid, granting persistent access to the victim's account. Fixed in 1.6.22 and 1.7.0-beta.10.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

8.3 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-03 18:29 UTC

CWE

CWE-287 - Improper Authentication

Assigner

VulnCheck CNA

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

2 products

Vendor	Product	Version
better-auth	better-auth	Affected: 1.1.3 , < 1.6.22 (semver) Unaffected: 1.6.22 (semver)
better-auth	better-auth	Affected: 1.7.0-beta.0 , < 1.7.0-beta.10 (semver) Unaffected: 1.7.0-beta.10 (semver)

Date Public

2026-06-26 00:00

Show details on NVD website

JSON

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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