CWE-303
Incorrect Implementation of Authentication Algorithm
Description
The requirements for the product dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect.
Hierarchy (View 1000)
Related attack patterns (CAPEC)
CAPEC-90
CVEs mapped to this weakness (109)
page 5 of 6| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2020-5268 | Med | 0.35 | 6.5 | 0.01 | Apr 21, 2020 | In Saml2 Authentication Services for ASP.NET versions before 1.0.2, and between 2.0.0 and 2.6.0, there is a vulnerability in how tokens are validated in some cases. Saml2 tokens are usually used as bearer tokens - a caller that presents a token is assumed to be the subject of… | ||
| CVE-2026-66411 | Med | 0.34 | 5.3 | 0.00 | Aug 10, 2026 | DEEBOT PRO M1 and DEEBOT PRO K1VAC incorrectly implement authentication algorithm in Websocket communications. An unauthenticated attacker may connect and operate the affected robot. | ||
| CVE-2025-61783 | Med | 0.34 | — | 0.00 | Oct 9, 2025 | Python Social Auth is a social authentication/registration mechanism. In versions prior to 5.6.0, upon authentication, the user could be associated by e-mail even if the `associate_by_email` pipeline was not included. This could lead to account compromise when a third-party… | ||
| CVE-2022-46146 | Med | 0.33 | 6.2 | 0.01 | Nov 29, 2022 | Prometheus Exporter Toolkit is a utility package to build exporters. Prior to versions 0.7.2 and 0.8.2, if someone has access to a Prometheus web.yml file and users' bcrypted passwords, they can bypass security by poisoning the built-in authentication cache. Versions 0.7.2 and… | ||
| CVE-2026-73444 | Med | 0.31 | 4.7 | 0.00 | Sep 15, 2026 | On affected platforms running Arista EOS with VRRPv2 IP Authentication Header (IP-AH) authentication configured, an unauthenticated attacker with access to the layer 2 network segment on which VRRP is running could bypass VRRP authentication and claim the virtual router master… | ||
| CVE-2023-4641 | Med | 0.31 | 4.7 | 0.00 | Dec 27, 2023 | A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve… | ||
| CVE-2022-4861 | Med | 0.31 | 4.8 | 0.01 | Dec 30, 2022 | Incorrect implementation in authentication protocol in M-Files Client before 22.5.11356.0 allows high privileged user to get other users tokens to another resource. | ||
| CVE-2026-27656 | Med | 0.30 | 5.7 | 0.00 | Mar 25, 2026 | Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to properly validate user identity in the OpenID {{IsSameUser()}} comparison logic, which allows an attacker to take over arbitrary user accounts via an overly permissive substring… | ||
| CVE-2026-8922 | Med | 0.28 | 5.4 | 0.00 | May 19, 2026 | A flaw was found in Keycloak. When both realm-level and client-level `notBefore` revocation policies are configured, Keycloak's OpenID Connect (OIDC) Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain… | ||
| CVE-2026-0999 | Med | 0.28 | 5.4 | 0.00 | Feb 16, 2026 | Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to properly validate login method restrictions which allows an authenticated user to bypass SSO-only login requirements via userID-based authentication. Mattermost Advisory ID: MMSA-2025-00548 | ||
| CVE-2025-3230 | Med | 0.28 | 5.4 | 0.00 | May 30, 2025 | Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly invalidate personal access tokens upon user deactivation, allowing deactivated users to maintain full system access by exploiting access token validation flaws via… | ||
| CVE-2025-2475 | Med | 0.28 | 5.4 | 0.00 | Apr 14, 2025 | Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to invalidate the cache when a user account is converted to a bot which allows an attacker to login to the bot exactly one time via normal credentials. | ||
| CVE-2024-56128 | Med | 0.28 | 5.3 | 0.01 | Dec 18, 2024 | Incorrect Implementation of Authentication Algorithm in Apache Kafka's SCRAM implementation. Issue Summary: Apache Kafka's implementation of the Salted Challenge Response Authentication Mechanism (SCRAM) did not fully adhere to the requirements of RFC 5802 [1]. Specifically, as… | ||
| CVE-2022-20923 | Med | 0.26 | 4.0 | 0.01 | Sep 8, 2022 | A vulnerability in the IPSec VPN Server authentication functionality of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to bypass authentication controls and access the IPSec VPN network. This vulnerability is due to… | ||
| CVE-2024-32879 | Med | 0.25 | 4.9 | 0.01 | Apr 24, 2024 | Python Social Auth is a social authentication/registration mechanism. Prior to version 5.4.1, due to default case-insensitive collation in MySQL or MariaDB databases, third-party authentication user IDs are not case-sensitive and could cause different IDs to match. This issue… | ||
| CVE-2026-93394 | Low | 0.24 | 3.7 | 0.00 | Sep 17, 2026 | 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… | ||
| CVE-2024-5658 | Med | 0.24 | 4.8 | 0.01 | Jun 6, 2024 | The CraftCMS plugin Two-Factor Authentication through 3.3.3 allows reuse of TOTP tokens multiple times within the validity period. | ||
| CVE-2026-32953 | Med | 0.23 | 4.6 | 0.00 | Mar 20, 2026 | Tillitis TKey Client package is a Go package for a TKey client. Versions 1.2.0 and below contain a critical bug in the tkeyclient Go module which causes 1 out of every 256 User Supplied Secrets (USS) to be silently ignored, producing the same Compound Device Identifier… | ||
| CVE-2024-41829 | Low | 0.23 | 3.5 | 0.00 | Jul 22, 2024 | In JetBrains TeamCity before 2024.07 an OAuth code for JetBrains Space could be stolen via Space Application connection | ||
| CVE-2025-2571 | Med | 0.20 | 4.2 | 0.00 | May 30, 2025 | Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fail to clear Google OAuth credentials when converting user accounts to bot accounts, allowing attackers to gain unauthorized access to bot accounts via the Google OAuth signup flow. |
- risk 0.35cvss 6.5epss 0.01
In Saml2 Authentication Services for ASP.NET versions before 1.0.2, and between 2.0.0 and 2.6.0, there is a vulnerability in how tokens are validated in some cases. Saml2 tokens are usually used as bearer tokens - a caller that presents a token is assumed to be the subject of…
- risk 0.34cvss 5.3epss 0.00
DEEBOT PRO M1 and DEEBOT PRO K1VAC incorrectly implement authentication algorithm in Websocket communications. An unauthenticated attacker may connect and operate the affected robot.
- risk 0.34cvss —epss 0.00
Python Social Auth is a social authentication/registration mechanism. In versions prior to 5.6.0, upon authentication, the user could be associated by e-mail even if the `associate_by_email` pipeline was not included. This could lead to account compromise when a third-party…
- risk 0.33cvss 6.2epss 0.01
Prometheus Exporter Toolkit is a utility package to build exporters. Prior to versions 0.7.2 and 0.8.2, if someone has access to a Prometheus web.yml file and users' bcrypted passwords, they can bypass security by poisoning the built-in authentication cache. Versions 0.7.2 and…
- risk 0.31cvss 4.7epss 0.00
On affected platforms running Arista EOS with VRRPv2 IP Authentication Header (IP-AH) authentication configured, an unauthenticated attacker with access to the layer 2 network segment on which VRRP is running could bypass VRRP authentication and claim the virtual router master…
- risk 0.31cvss 4.7epss 0.00
A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve…
- risk 0.31cvss 4.8epss 0.01
Incorrect implementation in authentication protocol in M-Files Client before 22.5.11356.0 allows high privileged user to get other users tokens to another resource.
- risk 0.30cvss 5.7epss 0.00
Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to properly validate user identity in the OpenID {{IsSameUser()}} comparison logic, which allows an attacker to take over arbitrary user accounts via an overly permissive substring…
- risk 0.28cvss 5.4epss 0.00
A flaw was found in Keycloak. When both realm-level and client-level `notBefore` revocation policies are configured, Keycloak's OpenID Connect (OIDC) Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain…
- risk 0.28cvss 5.4epss 0.00
Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to properly validate login method restrictions which allows an authenticated user to bypass SSO-only login requirements via userID-based authentication. Mattermost Advisory ID: MMSA-2025-00548
- risk 0.28cvss 5.4epss 0.00
Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly invalidate personal access tokens upon user deactivation, allowing deactivated users to maintain full system access by exploiting access token validation flaws via…
- risk 0.28cvss 5.4epss 0.00
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to invalidate the cache when a user account is converted to a bot which allows an attacker to login to the bot exactly one time via normal credentials.
- risk 0.28cvss 5.3epss 0.01
Incorrect Implementation of Authentication Algorithm in Apache Kafka's SCRAM implementation. Issue Summary: Apache Kafka's implementation of the Salted Challenge Response Authentication Mechanism (SCRAM) did not fully adhere to the requirements of RFC 5802 [1]. Specifically, as…
- risk 0.26cvss 4.0epss 0.01
A vulnerability in the IPSec VPN Server authentication functionality of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to bypass authentication controls and access the IPSec VPN network. This vulnerability is due to…
- risk 0.25cvss 4.9epss 0.01
Python Social Auth is a social authentication/registration mechanism. Prior to version 5.4.1, due to default case-insensitive collation in MySQL or MariaDB databases, third-party authentication user IDs are not case-sensitive and could cause different IDs to match. This issue…
- risk 0.24cvss 3.7epss 0.00
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…
- risk 0.24cvss 4.8epss 0.01
The CraftCMS plugin Two-Factor Authentication through 3.3.3 allows reuse of TOTP tokens multiple times within the validity period.
- risk 0.23cvss 4.6epss 0.00
Tillitis TKey Client package is a Go package for a TKey client. Versions 1.2.0 and below contain a critical bug in the tkeyclient Go module which causes 1 out of every 256 User Supplied Secrets (USS) to be silently ignored, producing the same Compound Device Identifier…
- risk 0.23cvss 3.5epss 0.00
In JetBrains TeamCity before 2024.07 an OAuth code for JetBrains Space could be stolen via Space Application connection
- risk 0.20cvss 4.2epss 0.00
Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fail to clear Google OAuth credentials when converting user accounts to bot accounts, allowing attackers to gain unauthorized access to bot accounts via the Google OAuth signup flow.