Common Weakness Enumeration

CWE-303

Allowed

Incorrect Implementation of Authentication Algorithm

Abstraction: Base · Status: Draft

The requirements for the product dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect.

106 vulnerabilities reference this CWE, most recent first.

CVE-2026-109928 (GCVE-0-2026-109928)

Vulnerability from cvelistv5 – Published: 2026-11-05 13:36 – Updated: 2026-11-05 13:36
VLAI
Title
Apache OFBiz: Incorrect Authentication Algorithm Implementation in Password Reset Enables Full Account Takeover
Summary
Incorrect Implementation of Authentication Algorithm in the password-reset and login JWT validation in Apache OFBiz 24.09 before 24.09.08 on all platforms allows an attacker who has obtained a user's password-reset token (via email interception, log exposure, or a man-in-the-middle on the mail transport) to authenticate as that user and obtain a full, unrestricted session, including administrative access if the targeted account is an administrator, by submitting the token directly to the login endpoint instead of the intended password-change flow. Users are recommended to upgrade to version 24.09.08, which fixes this issue.
Severity
No CVSS data available.
CWE
  • CWE-303 - Incorrect implementation of authentication algorithm
Assigner
apache CNA
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache OFBiz Affected: 0 , < 24.09.08 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-107279 (GCVE-0-2026-107279)

Vulnerability from cvelistv5 – Published: 2026-10-07 21:10 – Updated: 2026-10-08 15:02
VLAI
Title
AsyncHttpClient: Digest mutual authentication is switched off by a peer offering qop=auth-int
Summary
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. In 3.0.12, a peer offering only Digest qop=auth-int causes mutual-authentication verification to be skipped. AuthenticatorUtils.computeExpectedRspAuth returns no expected value for auth-int, and Interceptors treats that result as unverifiable but nonfatal, so a response with an invalid rspauth value is accepted. A peer that does not know the shared secret can therefore be accepted as the authenticated server. This issue is fixed in version 3.0.13.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 14:58 UTC
CWE
  • CWE-303 - Incorrect Implementation of Authentication Algorithm
  • CWE-757 - Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
Assigner
GitHub_M CNA
Impacted products
Show details on NVD website

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CVE-2026-104939 (GCVE-0-2026-104939)

Vulnerability from cvelistv5 – Published: 2026-10-14 14:40 – Updated: 2026-10-15 16:43
VLAI
Title
NGINX Ingress Controller vulnerability
Summary
Description NGINX Ingress Controller has a vulnerability when implementing an externalAuth policy for ingress. NGINX Ingress Controller may mishandle the HTTP response from an OAuth IdP and allow an attacker to acquire unauthenticated access to protected paths before the proper external authentication can happen. Impact This vulnerability may allow remote attackers unauthenticated access to protected paths. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 15:54 UTC
CWE
Assigner
f5 CNA
References
Impacted products
Vendor Product Version
F5 NGINX Ingress Controller Affected: 5.6.0 , < 5.7.0 (custom)
Create a notification for this product.
Date Public
2023-01-01 00:00
Show details on NVD website

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CVE-2026-101878 (GCVE-0-2026-101878)

Vulnerability from cvelistv5 – Published: 2026-09-29 01:58 – Updated: 2026-11-08 14:00 X_Open Source
VLAI
Title
Bitwarden Server 2025.6.0 < 2025.6.0 Authentication Bypass via SSO Identifier Truncation
Summary
Bitwarden Server 2025.6.0 before 2026.5.0 declares the @ExternalId parameter of the User_ReadBySsoUserOrganizationIdExternalId stored procedure as NVARCHAR(50) while the column it queries stores NVARCHAR(300), silently truncating the SSO login identifier on SQL Server deployments and allowing a user whose identity-provider identifier begins with another organization member's full 50-character identifier to authenticate as that member and obtain a victim-scoped access token.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 17:21 UTC
CWE
  • CWE-303 - Incorrect Implementation of Authentication Algorithm
Assigner
VulnCheck CNA
Impacted products
Vendor Product Version
bitwarden bitwarden server Affected: 2025.6.0 , < 2026.5.0 (custom)
    cpe:2.3:a:bitwarden:server:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-04-29 00:00
Show details on NVD website

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CVE-2026-97720 (GCVE-0-2026-97720)

Vulnerability from cvelistv5 – Published: 2026-10-07 08:46 – Updated: 2026-10-07 18:47
VLAI
Title
Apache Impala: Impala Executor Webserver Auth Bypass
Summary
Incorrect implementation of JWT/OAuth authentication in Impala executors in Apache Impala versions up to and including 4.5.2 which allows attacked to access resources served by the executor's webserver when that webserver is configured to accept JWT/OAuth tokens.  Bearer token (JWT) signatures are not validated resulting in the webserver accepting any valid JWT. Users are recommended to either disable JWT/OAuth auth for Impala executors or upgrade to version 4.5.3, which fixes this issue.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 18:47 UTC
CWE
  • CWE-303 - Incorrect implementation of authentication algorithm
Assigner
apache CNA
Impacted products
Vendor Product Version
Apache Software Foundation Apache Impala Affected: 4.1.0 , ≤ 4.5.2 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-96460 (GCVE-0-2026-96460)

Vulnerability from cvelistv5 – Published: 2026-11-06 06:02 – Updated: 2026-11-06 17:34
VLAI
Title
Keycloak-services: keycloak-services: indefinite access token renewal via standard token exchange v2
Summary
A flaw was found in the token exchange mechanism of Keycloak. When using Standard Token Exchange V2, the system issues new tokens with a fresh lifetime based on the requester clients configuration instead of limiting it to the original tokens expiration. This issue allows an authenticated requester to indefinitely extend access for service accounts by repeatedly exchanging tokens, even if the original client has been disabled by an administrator.
CWE
  • CWE-303 - Incorrect Implementation of Authentication Algorithm
Assigner
redhat CNA
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:95761 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95762 vendor-advisoryx_refsource_REDHAT
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https://bugzilla.redhat.com/show_bug.cgi?id=2539301 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6.8-2 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.6::el9
Create a notification for this product.
Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6-24 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.6::el9
Create a notification for this product.
Red Hat Red Hat build of Keycloak 26.6.8     cpe:/a:redhat:build_keycloak:26.6::el9
Create a notification for this product.
Red Hat Red Hat Single Sign-On 7     cpe:/a:redhat:red_hat_single_sign_on:7
Create a notification for this product.
Date Public
2026-11-05 00:00
Show details on NVD website

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CVE-2026-93394 (GCVE-0-2026-93394)

Vulnerability from cvelistv5 – Published: 2026-09-17 20:31 – Updated: 2026-09-18 14:31
VLAI
Title
libmongoc SCRAM client nonce-validation bypass
Summary
A flaw in libmongoc's SCRAM authentication implementation caused the client to continue the authentication handshake and transmit the client proof even when a nonce mismatch was detected in the server's first message. An unauthorized party with a man-in-the-middle position could exploit this by injecting a crafted server-first-message containing a controlled salt and low iteration count, then capturing the resulting client proof to perform offline password cracking. This vulnerability is mitigated by TLS, which is standard in production deployments.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 14:27 UTC
CWE
  • CWE-303 - Incorrect Implementation of Authentication Algorithm
Assigner
mongodb CNA
References
Impacted products
Vendor Product Version
MongoDB Inc. C Driver Affected: 2.0.0 , < 2.3.2 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-92873 (GCVE-0-2026-92873)

Vulnerability from cvelistv5 – Published: 2026-09-30 07:51 – Updated: 2026-09-30 16:58
VLAI
Summary
Pgpool-II contains an incorrect implementation of an authentication algorithm, which may allow an unauthenticated attacker to promote an arbitrary watchdog node to the leader node.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 16:58 UTC
CWE
  • CWE-303 - Incorrect Implementation of Authentication Algorithm
Assigner
jpcert CNA
Impacted products
Vendor Product Version
Pgpool Global Development Group Pgpool-II Affected: 4.7.0 , ≤ 4.7.2 (semver)
Affected: 4.6.0 , ≤ 4.6.7 (semver)
Affected: 4.5.0 , ≤ 4.5.12 (semver)
Affected: 4.4.0 , ≤ 4.4.17 (semver)
Affected: 4.3.0 , ≤ 4.3.20 (semver)
Affected: 3.5.x , ≤ 4.2.x (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-89077 (GCVE-0-2026-89077)

Vulnerability from cvelistv5 – Published: 2026-10-14 15:16 – Updated: 2026-10-15 03:56
VLAI
Title
MOVEit Transfer Identity validation flaw in SFTP authentication
Summary
Incorrect implementation of authentication algorithm vulnerability in Progress MOVEit Transfer (SFTP module). This issue affects MOVEit Transfer: before 2025.1.6 and from 2026.0.0 before 2026.0.4.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 00:00 UTC
CWE
  • CWE-303 - Incorrect implementation of authentication algorithm
Assigner
References
Impacted products
Vendor Product Version
Progress MOVEit Transfer Affected: 0 , < 2025.1.6 (semver)
Affected: 2026.0.0 , < 2026.0.4 (semver)
Create a notification for this product.
Date Public
2026-10-14 15:00
Show details on NVD website

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CVE-2026-86589 (GCVE-0-2026-86589)

Vulnerability from cvelistv5 – Published: 2026-10-19 09:35 – Updated: 2026-10-30 16:35
VLAI
Title
Apache Answer: User Center integration does not revoke first-login sessions after central account suspension
Summary
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SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 16:35 UTC
CWE
  • CWE-303 - Incorrect implementation of authentication algorithm
Assigner
apache CNA
Impacted products
Vendor Product Version
Apache Software Foundation Apache Answer Affected: 0 , ≤ 2.0.2 (semver)
Create a notification for this product.
Credits
Show details on NVD website

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No mitigation information available for this CWE.

CAPEC-90: Reflection Attack in Authentication Protocol

An adversary can abuse an authentication protocol susceptible to reflection attack in order to defeat it. Doing so allows the adversary illegitimate access to the target system, without possessing the requisite credentials. Reflection attacks are of great concern to authentication protocols that rely on a challenge-handshake or similar mechanism. An adversary can impersonate a legitimate user and can gain illegitimate access to the system by successfully mounting a reflection attack during authentication.