CVE-2026-56020

The Webmin HTTP server miniserv.pl allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote attacker can spoof certificate DNs and authenticate as any user. Fixed in 2.641...

CVE-2026-56020 Webmin HTTP header authentication bypass

The Webmin HTTP server miniserv.pl allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote attacker can spoof certificate DNs and authenticate as any user. Fixed in 2.641...

CVE-2026-56020

The CVE-2026-56020 affects the Webmin HTTP server (miniserv.pl). An unauthenticated attacker can bypass authentication by sending a forged HTTP header to impersonate any user who has an SSL client certificate configured, effectively spoofing certificate DNs to gain access. This is a network-based...

EUVD-2026-37909

The Webmin HTTP server miniserv.pl allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote attacker can spoof certificate DNs and authenticate as any user. Fixed in 2.641...

CVE-2026-35656

OpenClaw is affected pre-2026.3.22 by an authentication bypass in X-Forwarded-For header processing when trustedProxies is configured, enabling an attacker to spoof loopback hops and bypass canvas authentication and rate-limiting protections by forging forwarding headers. The issue impacts the au...

CVE-2026-39411

CVE-2026-39411 (LobeHub) describes an unauthenticated authentication bypass on the webapi routes via a forgeable, client-controlled X-lobe-chat-auth header. Before version 2.1.48, the webapi authentication layer trusts an XOR-obfuscated header (hardcoded key: “LobeHub · LobeHub”) and treats decod...

User Impersonation

Overview @lobehub/lobehub is a LobeHub - an open-source,comprehensive AI Agent framework that supports speech synthesis, multimodal, and extensible Function Call plugin system. Supports one-click free deployment of your private ChatGPT/LLM web application. Affected versions of this package are...

CVE-2026-30956 OneUptime has authorization bypass via client‑controlled is-multi-tenant-query header

OneUptime is a solution for monitoring and managing online services. Prior to 10.0.21, a low‑privileged user can bypass authorization and tenant isolation in OneUptime v10.0.20 and earlier by sending a forged is-multi-tenant-query header together with a controlled projectid header. Because the...

CVE-2026-30956

CVE-2026-30956 relates to OneUptime with advisory GHSA-R5V6-2599-9G3M and OSV-GHSA-R5V6-2599-9G3M describing an authorization bypass in v10.0.20. The root cause is that the API trusts a client-controlled is-multi-tenant-query header to bypass tenant isolation, causing the system to skip Table/Que...

CVE-2026-27981

HomeBox is a home inventory and organization system. Prior to 0.24.0, the authentication rate limiter authRateLimiter tracks failed attempts per client IP. It determines the client IP by reading, 1. X-Real-IP header, 2. First entry of X-Forwarded-For header, and 3. r.RemoteAddr TCP connection...

Brute Force

Overview Affected versions of this package are vulnerable to Brute Force via the authentication rate limiting process. An attacker can bypass authentication rate limiting by forging the X-Real-IP header, allowing unlimited authentication attempts from a single source. Remediation Upgrade...

CVE-2025-66482

Misskey is an open source, federated social media platform. Attackers who use an untrusted reverse proxy or not using a reverse proxy at all can bypass IP rate limiting by adding a forged X-Forwarded-For header. Starting with version 2025.9.1, an option trustProxy has been added in config file to...

CVE-2025-66482

Misskey is an open source, federated social media platform. Attackers who use an untrusted reverse proxy or not using a reverse proxy at all can bypass IP rate limiting by adding a forged X-Forwarded-For header. Starting with version 2025.9.1, an option trustProxy has been added in config file to...

CVE-2025-66482 Misskey has a login rate limit bypass via spoofed X-Forwarded-For header

Misskey is an open source, federated social media platform. Attackers who use an untrusted reverse proxy or not using a reverse proxy at all can bypass IP rate limiting by adding a forged X-Forwarded-For header. Starting with version 2025.9.1, an option trustProxy has been added in config file to...

CVE-2025-66482 Misskey has a login rate limit bypass via spoofed X-Forwarded-For header

Misskey is an open source, federated social media platform. Attackers who use an untrusted reverse proxy or not using a reverse proxy at all can bypass IP rate limiting by adding a forged X-Forwarded-For header. Starting with version 2025.9.1, an option trustProxy has been added in config file to...

CVE-2025-66482 Misskey has a login rate limit bypass via spoofed X-Forwarded-For header

Misskey is an open source, federated social media platform. Attackers who use an untrusted reverse proxy or not using a reverse proxy at all can bypass IP rate limiting by adding a forged X-Forwarded-For header. Starting with version 2025.9.1, an option trustProxy has been added in config file to...

CVE-2025-66482

Misskey CVE-2025-66482 affects the login rate-limiting mechanism via forged X-Forwarded-For headers. The vulnerability arises from an insecure default for trustProxy in the config, making instances vulnerable if not explicitly overridden. It is addressable starting with version 2025.9.1 by introd...

Misskey has a login rate limit bypass via spoofed X-Forwarded-For header

Summary When using an untrusted reverse proxy or not using a reverse proxy at all, attackers can bypass IP rate limiting by adding a forged X-Forwarded-For header. Starting with version 2025.9.1, an option trustProxy has been added in config file to prevent this from happening. However, it is...

CVE-2025-66039

CVE-2025-66039 affects FreePBX Endpoint Manager. The vulnerability is an authentication bypass when the Webserver Authorization Mode is enabled: sending an Authorization header with an arbitrary value associates a session with the target user despite valid credentials. This can lead to unauthoriz...

CVE-2025-66039 FreePBX Endpoint Manager Allows Unauthenticated Logins to Administrator Control Panel via Forged Basic Auth Header

FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. Versions are vulnerable to authentication bypass when the authentication type is set to "webserver." When providing an Authorization header with an arbitrary value, a session is associated with the target us...