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CVE-2026-89327 Baixa · 3.8 CWE-290 16/09/2026
FluentBoards < 2.0.15 - Board Member+ Comment Author Spoofing via 'comment_by' Parameter
The FluentBoards WordPress plugin before 2.0.15 does not verify that a board member submitting a comment is the user the comment is attributed to, allowing any board member to post comments that appear to be authored by another user, including administrators.
CVE-2026-15640 Crítica · 9.5 CWE-290 15/09/2026
Authentication Bypass via SAML Response Manipulation
Under certain conditions a valid SAML IdP response may be used to impersonate another Secret Server user.
CVE-2026-89022 Alta · 7.4 CWE-290 15/09/2026
BookStack < 26.05.5 Authentication Bypass via Social Login Provider Confusion
BookStack before 26.05.5 contains an authentication bypass vulnerability in its social login implementation that allows unauthenticated attackers to sign in as arbitrary users by authenticating through a different social provider sharing the same driver_id namespace. Attackers can authenticate at one enabled social provider using a user ID that matches an account linked to a different social provider, bypassing credential verification entirely because the SocialAuthService::handleLoginCallback query ignores the driver column when retrieving linked account records.
CVE-2026-59157 Média · 6.5 CWE-290 15/09/2026
webhookd: Unrestricted HTTP Header to Shell Variable Injection
webhookd is a minimalist webhook server that triggers shell scripts and external processes through HTTP requests. Prior to 1.22.0, webhookd deployments without htpasswd authentication forwarded all incoming HTTP headers through HTTPParamsToShellVars in pkg/api/index.go into the hook script environment without an allowlist. When an upstream reverse proxy did not strip a client-supplied X-WebAuthn-User header and a hook script trusted that variable for identity or privilege, a remote unauthenticated attacker could spoof another user, bypass script security controls, and access or modify resources available to the impersonated identity. This issue is fixed in version 1.22.0.
CVE-2026-90711 Crítica · 9.1 CWE-290 15/09/2026
proxy-addr vulnerable to IP spoofing via IPv4-mapped IPv6 trust subnet
proxy-addr is a Node.js module that determines a request's client address behind trusted reverse proxies, and it backs Express req.ip and req.ips. In versions 1.1.0 through 2.0.7, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as ::ffff:10.0.0.0/8 instead of the correct ::ffff:10.0.0.0/104, is accepted without error but trusts every IPv4 address on the internet rather than the block it names. Because the socket peer then becomes trusted at hop 0, any unauthenticated client can supply an arbitrary X-Forwarded-For header and control the address the application reads, which defeats IP-based access control, rate limiting, geolocation, and audit logging. This is a fail-open regression introduced in version 1.1.0. The issue is fixed in proxy-addr 2.0.8, and users should upgrade to 2.0.8 or later. As a workaround, ensure any IPv4-mapped IPv6 trust subnet uses a prefix length of at least 97, or express the range in plain IPv4 notation.
CVE-2026-73449 Média · 5.9 CWE-290 14/09/2026
On affected platforms running Arista EOS with both 802.1X port authentication and the RADIUS proxy feature configured with dynamic authorization, a low-privileged attacker on an adjacent network segment who induces a RADIUS packet through a configured RAD
On affected platforms running Arista EOS with both 802.1X port authentication and the RADIUS proxy feature configured with dynamic authorization, a low-privileged attacker on an adjacent network segment who induces a RADIUS packet through a configured RADIUS proxy client can prevent RADIUS dynamic authorization messages, including Change-of-Authorization (CoA) and Disconnect-Requests as defined in RFC 5176, from being applied to locally authenticated 802.1X sessions. This allows an endpoint session that a RADIUS server or network access control system has ordered disconnected to remain authorized on the network. Both 802.1X port authentication with dynamic authorization and RADIUS proxy with dynamic authorization must be explicitly configured for a deployment to be exposed to this issue. This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.
CVE-2026-65399 Média · 4.4 CWE-290 14/09/2026
Authentication Bypass by Spoofing em Apple Ipados
A file quarantine bypass was addressed with additional checks. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, visionOS 27, watchOS 27. An archive may be able to bypass Gatekeeper.
CVE-2026-18065 Média · 5.3 CWE-290 14/09/2026
IBM i is Affected By Multiple Vulnerabilities in Navigator for i and Digital Certificate Manager for i.
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote unauthenticated attacker to gain access to sensitive information through session IP binding bypass in Navigator for i.
CVE-2026-88819 Média · 6.3 CWE-290 14/09/2026
Authentication Bypass by Spoofing em Eclipse Foundation Eclipse Data Plane Core
In Siglet current and past versions the refresh token handler do not enforce proof of possession of the issuer DID.
CVE-2026-21391 Crítica · 9.5 CWE-290 14/09/2026
Improper Claim Validation in PingAM OIDC Provider
An improper validation vulnerability exists within PingAM where a well-crafted request allows arbitrary or protected ID Token claims to be set or overridden. In certain configurations this could allow an attacker to bypass authentication controls via spoofing leading to privilege escalation or impersonation.
CVE-2026-87785 Crítica · 9.1 CWE-290 14/09/2026
Apache Syncope: JWT subject spoofing
Authentication bypass by spoofing vulnerability in Apache Syncope. When the configured JWKS settings for internal JWT authentication are disclosed (at least protocol and key), an attacker can spoof another user's privileges after completing a successful authentication and obtaining a valid JWT. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.7, from 4.1.0-M0 through 4.1.2. Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.
CVE-2025-68624 Média · 4.3 CWE-290 13/09/2026
N-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an...
N-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server accepts arbitrary sender domains without enforcing any domain-to-account binding. As a result, an attacker from any tenant can impersonate other tenant domains, producing messages that pass SPF and DMARC validation. NOTE: N-able's position is that the behavior is intended functionality of its shared SMTP relay architecture and that the service does not represent that it enforces per-tenant sender-domain binding.
CVE-2026-90447 Média · 6.5 CWE-290 11/09/2026
Authentication Bypass by Spoofing in Malcolm
A routing rule selects between two different authentication mechanisms for the same downstream service based on the value of a client-supplied request header, rather than on any property the client cannot control. An authenticated user in possession of a shared service credential can set this header to route around the primary role-based authorization check and reach the alternate path's fixed, elevated role instead. This allows a low-privileged authenticated attacker who knows the shared credential to perform actions reserved for a higher-privileged role.
CVE-2026-45056 Média · 6.9 CWE-290 11/09/2026
Matrix Rust SDK: Sender-binding gaps in to-device and room-key attribution
matrix-sdk-crypto is a no-network-IO implementation of a state machine that handles end-to-end encryption for Matrix clients. Starting in version 0.12.0 and prior to version 0.17.0, the matrix-sdk-crypto crate was missing a check for the user ID when decrypting an Olm-encrypted event containing the `sender_device_keys` property. This could be exploited to forge an encrypted to-device event, but only if the attacker colludes with the homeserver operator. This issue is fixed in matrix-sdk-crypto 0.17.0. There are no known workarounds for the issue.
CVE-2026-63427 Alta · 7.8 CWE-290 10/09/2026
Authentication Bypass by Spoofing em Lenovo Software Fix
An authentication bypass vulnerability was discovered in Lenovo Software Fix that could allow a local authenticated user to perform arbitrary code execution with elevated privileges.
CVE-2026-88011 Alta · 8.1 CWE-290 10/09/2026
Traefik: ForwardAuth identity spoofing via dot-form header alias
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User while normalization-prone CGI, WSGI, PHP, and NGINX backends collapse both names. A backend can consequently consume the client value instead of the identity Traefik asserted, allowing identity spoofing for any header managed by Traefik. The aliasHeadersStrategy protection is disabled by default and must be configured as delete or reject. The mitigation is available in 2.11.56 and 3.7.12.
CVE-2026-66674 Média · 5.6 CWE-290 10/09/2026
WordPress Simple Cloudflare Turnstile plugin <= 1.42.1 - Captcha Bypass vulnerability
Unauthenticated Bypass Vulnerability in Simple Cloudflare Turnstile <= 1.42.1 versions.
CVE-2026-88879 Alta · 8.2 CWE-290 10/09/2026
Traefik before v2.11.56 Identity Spoofing via Header Alias
Traefik is an HTTP reverse proxy and load balancer. In Traefik v1.x, v2.x through v2.11.55, and v3.0.0 through v3.7.11, header names are canonicalized only on dashes, so X-Auth-User, X_Auth_User and X.Auth.User are treated as three distinct headers by Traefik, while backends that derive variable names from header names (CGI, WSGI, PHP, NGINX and others) collapse them into a single variable. A client can therefore smuggle a dot-form alias of a header that Traefik manages past the middleware managing it — for example supplying X.Authenticated.User alongside the canonical X-Authenticated-User written by the ForwardAuth middleware — causing such a backend to read the client-supplied value instead of the identity Traefik asserted. In the tested configuration (PHP 8.2 built-in SAPI over an HTTP/1 backend path), Go's lexical header ordering makes the attacker-supplied value win deterministically, so a client that ForwardAuth admits as a low-privilege identity can be treated by the backend as a different user or role. Any header Traefik sets is affected, not only ForwardAuth's. This is an incomplete fix for GHSA-x677-9fxg-v5c5, which blocked only the underscore form. Fixed in v2.11.56 and v3.7.12, which add the aliasHeadersStrategy entry-point option; because it defaults to 'keep' for backwards compatibility, it must be explicitly set to 'delete' or 'reject' for the fix to take effect. Unmaintained release lines will not receive a patch.
CVE-2026-82563 Alta · 7.6 CWE-290 09/09/2026
Softish C6 Ear Camera and EarVision Android Application Authentication bypass by spoofing
An attacker could impersonate the camera and place themselves in a man-in-the-middle or device-emulation position. This permits manipulation of device status responses, observation of application requests, and potential triggering of firmware-update behavior.
CVE-2026-82530 Média · 5.3 CWE-290 09/09/2026
IP2Location Country Blocker < 2.45.0 Access Control Bypass via X-Real-IP Header
IP2Location Country Blocker plugin for WordPress before 2.45.0 contains an access control bypass vulnerability that allows unauthenticated remote attackers to circumvent IP-based restrictions by forging the X-Real-IP HTTP header. Attackers can set the X-Real-IP header to an allowlisted IP address to bypass page, link, or site-wide access restrictions and access otherwise-blocked resources.
CVE-2026-62759 Alta · 7.5 CWE-290 08/09/2026
Windows Netlogon Spoofing Vulnerability
Authentication bypass by spoofing in Windows Netlogon allows an unauthorized attacker to perform spoofing over an adjacent network.
CVE-2026-77089 Crítica · 9.8 CWE-290 08/09/2026
Command Center API Authentication Bypass
Command Center API contained an authentication bypass issue affecting privilege management. Software customers upgrade to resolved maintenance release. Update Command Center.
CVE-2026-86478 Crítica · 9.8 CWE-290 07/09/2026
Authentication Bypass by Spoofing em Jetbrains Youtrack
In JetBrains YouTrack before 2025.3.161254, 2026.1.14042 improper authentication in YouTrack Helpdesk allowed unauthenticated account takeover via a self-asserted email address
CVE-2026-84186 Média · 6.9 CWE-290 07/09/2026
Incorrect access control in PrestaShop
Vulnerability involving incorrect access control in the Tools::getRemoteAddr() function in PrestaShop, which allows the client’s IP address to be spoofed via the X-Forwarded-For header when the application is running behind a reverse proxy, load balancer or CDN. The application incorrectly processes the IP address string and uses the address controlled by the visitor rather than the one provided by the trusted infrastructure, allowing an unauthenticated remote attacker to cause the application to interpret their connection as originating from an arbitrary IP address. This condition allows IP-based controls, such as the maintenance mode allowlist, to be bypassed, as well as enabling the forgery of security and audit logs and the evasion of third-party mechanisms that rely on the IP address, such as geolocation checks, fraud detection or request throttling.
CVE-2026-86196 Alta · 8.7 CWE-290 05/09/2026
Grav API Plugin before 1.0.20 Authentication Bypass via Host Header
Grav API plugin versions before 1.0.20 build password reset links from the untrusted Host header in the forgot-password endpoint, allowing unauthenticated attackers to redirect reset tokens to attacker-controlled domains. Attackers can send password reset requests for any account with a malicious Host header, intercept the reset token from victim emails, and complete account takeover including super-admin accounts.