Weakness (CWE)
CWE-290: Authentication Bypass by Spoofing
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.
Source: MITRE CWE-290
756 results · Feed
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High 7.5
Windows Netlogon Spoofing Vulnerability
Authentication bypass by spoofing in Windows Netlogon allows an unauthorized attacker to perform spoofing over an adjacent network.
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Critical 9.3
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.
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Critical 9.8CVE-2026-86478 Public exploit
In JetBrains YouTrack before 2025.3.161254, 2026.1.14042 improper authentication in YouTrack Helpdesk allowed unauthent…
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Medium 6.9
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 C…
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High 8.7
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 req…
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High 8.2
MOOS core-moos through 10.4.0 MOOSDB Message Source Spoofing via Wire Identity
MOOS core-moos through 10.4.0 fails to validate client identity in MOOSDB message processing, allowing authenticated attackers to attribute writes to other clients by supplying arbitrary source identifiers in serialized messages. Attackers can forge message o…
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Medium 5.9
WordPress FluentBooking Pro plugin <= 2.2.1 - Bypass Vulnerability vulnerability
Unauthenticated Bypass Vulnerability in FluentBooking Pro <= 2.2.1 versions.
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Medium 6.5
WordPress Pre-Orders for WooCommerce plugin <= 2.3 - Bypass Vulnerability vulnerability
Unauthenticated Bypass Vulnerability in Pre-Orders for WooCommerce <= 2.3 versions.
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Critical 9.5
In Eclipse Arrowhead versions from 5.0.0 to 5.2.1 when the MQTT API is enabled with the certificate authentication poli…
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Critical 9.8
Delinea Secret Server FIDO2 credential registration authentication bypass vulnerability
Under specific conditions, an attacker can register an attacker-controlled FIDO2 credential against a target account and then authenticate as that user. This issue affects on-premises deployments only.
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High 7.1
Session takeover via Auth Proxy cache key collision
Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct id…
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Critical 9.1
WWBN AVideo Authentication Bypass via User-Agent Header
WWBN AVideo (current e01e41ecc and earlier) makes three login-time security controls depend solely on the client-supplied User-Agent header. The isAVideoEncoder()/isAVideoMobileApp() checks match HTTP_USER_AGENT against a hardcoded literal ("AVideoEncoder"/"A…
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High 7.5
WWBN AVideo Authentication Bypass via X-Real-IP Header
WWBN AVideo fails to validate trusted proxies before accepting X-Real-IP and X-Forwarded-For headers, allowing attackers to spoof the client address used by enforceRateLimit(). Attackers can rotate the header value per request to bypass login rate limiting an…
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Medium 4.3
Improper Client Address Validation allows Request Attribution Spoofing in Fabric Composer API Endpoint
A vulnerability in an API endpoint of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to spoof the source address attributed to their requests. Successful exploitation could allow an attacker to cause inaccurate attribu…
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High 8.8
Dell PowerStore contains an Authentication Bypass by Spoofing vulnerability. An authenticated attacker could potentiall…
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High 8.1
WordPress SiteGround Security plugin <= 1.6.6 - 2FA Bypass vulnerability
Unauthenticated Bypass Vulnerability in SiteGround Security <= 1.6.6 versions.
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Low 3.7
WireGuard keepalive transport-data messages accepted without Poly1305 authentication
Zephyr's WireGuard implementation in subsys/net/lib/wireguard/wg_crypto.c mishandled keepalive packets. In wg_process_data_message(), any type-4 transport-data message whose payload was exactly 16 bytes (an empty plaintext plus a bare Poly1305 tag, i.e. a kee…
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High 7.5CVE-2026-55584 Public exploit
phpSysInfo: IP allowlist (PSI_ALLOWED) bypass via spoofed X-Forwarded-For / Client-IP headers
phpSysInfo is a customizable PHP script that displays system information. Prior to 3.4.6, the PSI_ALLOWED access-control check in read_config.php trusts attacker-controlled X-Forwarded-For and Client-IP HTTP headers before REMOTE_ADDR. A remote unauthenticate…
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Medium 5.3
WordPress Essential Addons for Elementor plugin <= 6.8.0 - Bypass vulnerability vulnerability
Authentication Bypass by Spoofing vulnerability in WPDeveloper Essential Addons for Elementor allows Identity Spoofing. This issue affects Essential Addons for Elementor: from n/a through 6.8.0.
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Medium 5.3
Reactor Netty HTTP Server may incorrectly evaluate proxy addresses
In specific scenarios, Reactor Netty HTTP Server may incorrectly evaluate the remote IP address when HAProxy Protocol is enabled. In order for this to happen, the application must be configured to use HAProxy Protocol. Reactor Netty 1.3.0 - 1.3.6 Reactor Nett…
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Critical 9.8
TarsWeb through 3.0.14 Authentication Bypass via Spoofed X-Forwarded-For and uid Parameter
TarsWeb decides whether a request comes from a trusted local caller using a client-controlled header. app.js sets Koa's proxy option to true without naming which upstream proxies may be trusted and without limiting the number of forwarded hops, so the request…
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High 8.2
Bypass of BLOCKED ACL items on proxy protocol port over TCP or TLS
The BLOCKED access control list items that are evaluated to deny access on the the proxy protocol port can be bypassed completely when connecting over TCP or TLS and sending the query twice on connection that is kept open.
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Medium 6.3
Doorkeeper OpenID Connect: Dynamic Client Registration feature creates public clients with client_secret
Doorkeeper is an OAuth 2 provider for Ruby on Rails. In version 1.9.0, an attacker who knows only a dynamically registered client's client_id, which is public information, can authenticate as that client at the token endpoint and obtain an access token withou…
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High 7.0CVE-2026-75037 Public exploit
Polkit authentication bypass in LACT
Polkit Authentication Based on UnixProcessSubject / Peer PID in LACT on Linux allows an Authentication Bypass. This issue affects LACT through 0.10.0. Fixed by commit d0478fe42c2219454e272f96b1cbd29ab37ee566.
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Critical 9.1
CakePHP: Potential Authentication bypass with CookieAuthenticator
CakePHP Authentication is an authentication plugin for CakePHP that can also be used in PSR-7 based applications. Versions before 2.11.2, from 3.0.0 through 3.3.6, and from 4.0.0 through 4.2.0 allow authentication bypass and potential CPU or memory exhaustion…
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Medium 6.5
joserfc claim-validation bypass via array-typed single-string claims (iss/sub/jti)
joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. Prior to version 1.7.3, JWTClaimsRegistry applies membership matching to list-valued iss and sub claims, allowing an array-valued iss t…
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Critical 9.1
OAuth2 Proxy 7.15.2 through 7.15.4 Authentication Bypass via X-Forwarded-Uri Under the Default Trusted Proxy Set
OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authentication, because the guard added for CVE-2026-40575 is inert in the default reverse-proxy configuration. GetRequestURI in pkg/requests/util/util.go p…
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Critical 9.1
Centrifugo: Client-forgeable headers emulation lets any client spoof headers forwarded to proxy backends
Centrifugo is an open-source scalable real-time messaging server. Prior to 6.9.0, Centrifugo copies the client-controlled protocol.ConnectRequest.headers map through OnClientConnecting in internal/client/handler.go, ConnectEvent.Headers, and SetEmulatedHeader…
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High 7.5
Monkeytype: Rate-limit and anti-brute-force controls bypassable via spoofed HTTP headers (forgotPasswordEmail/verificationEmail mail bombing and badAuth bypass)
Monkeytype is a minimalistic and customizable typing test. In 26.26.0 and earlier, the backend rate-limit key generator in backend/src/middlewares/rate-limit.ts uses client-controlled cf-connecting-ip and x-forwarded-for headers before the trust-proxy-derived…
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High 8.1
Authentication Bypass through IP Address Spoofing in the Automation Broker in Splunk SOAR
In Splunk SOAR versions below 8.6.0, an unauthenticated user could spoof the source IP address in a crafted request to an Automation Broker notification endpoint and execute arbitrary code on the Splunk SOAR host. The vulnerability is possible because the Spl…
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Medium 5.4
WordPress User Registration plugin <= 5.2.6 - Broken Authentication vulnerability
Subscriber Broken Authentication in User Registration <= 5.2.6 versions.
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Medium 6.5
go-chi chi before 5.3.0 IP Spoofing via RealIP Middleware
go-chi/chi through 5.2.1 contains an IP spoofing vulnerability in the RealIP middleware (middleware/realip.go). The realIP() function reads client-controlled headers (True-Client-IP, X-Real-IP, and X-Forwarded-For) and overwrites r.RemoteAddr without verifyin…
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Medium 6.9CVE-2026-72815 Public exploit
go-chi chi v5.2.1 IP Spoofing via X-Forwarded-For Header
go-chi chi versions >= 5.2.1 and before 5.3.0 contain an IP spoofing vulnerability in the RealIP middleware, which blindly trusts the first (leftmost) value of the X-Forwarded-For HTTP header. A remote attacker can bypass IP-based access control lists and rat…
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Medium 5.3
OpenChoreo: Unauthenticated build/workflow trigger via git-provider confusion (webhook signature bypass)
OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.3, 1.1.3, and 1.2.0-rc.2, the POST /api/v1alpha1/autobuild endpoint in internal/openchoreo-api/api/handlers/webhook_handler.go selected a webhook provider from caller-contro…
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High 7.0
A potential authentication bypass vulnerability was reported in Lenovo System Update that could allow a local authentic…
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Critical 9.1
rsync < 3.5.0 Daemon IP Spoofing via PROXY Protocol Header
rsync daemon before 3.5.0 contains an IP address spoofing vulnerability that allows unauthenticated remote attackers to bypass IP-based access controls by sending a crafted PROXY protocol header with a forged source address. Attackers who can connect directly…
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High 8.8
Bluetooth re-pairing can use a lower security level than previous
Bluetooth re-pairing with an existing device can use a lower security level. RS9116W and SiWx91x impacted. See V3 in the BLERP paper linked below.
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High 8.8
forced re-pairing with already bonded device
Spoofing an already bonded device can force either RS9116W or SiWx917 to re-pair/bond with a rogue device. See V1 in BLERP paper below
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Critical 9.8
WordPress OAuth Single Sign On – SSO (OAuth Client) plugin <= 7.0.0 - Broken Authentication vulnerability
Unauthenticated Broken Authentication in OAuth Single Sign On – SSO (OAuth Client) <= 7.0.0 versions.
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Low 2.1
Prisma Access Agent: Local Security Inspection Bypass Vulnerability on Windows
An authentication bypass vulnerability in the network driver of Palo Alto Networks Prisma® Access Agent on Windows enables a local administrator to bypass security inspection, subsequently allowing them to inject and intercept arbitrary network traffic. The P…