GO-2026-6386 SiYuan: Localhost-trust admin bypass on auth-code-gated endpoints, with potential remote reachability via the fixed-port proxy in github.com/siyuan-note/siyuan/kernel

SiYuan: Localhost-trust admin bypass on auth-code-gated endpoints, with potential remote reachability via the fixed-port proxy in github.com/siyuan-note/siyuan/kernel...

SiYuan: Localhost-trust admin bypass on auth-code-gated endpoints, with potential remote reachability via the fixed-port proxy

CVE: This vulnerability corresponds to CVE-2026-72809. Summary The kernel's CheckAuth grants RoleAdministrator to any request whose RemoteAddr is loopback 127.0.0.1, for a specific set of endpoints, and these localhost bypasses sit outside the accessAuthCode gate so they apply even when an access...

GHSA-3MP7-4RH5-JRV9 SiYuan: Localhost-trust admin bypass on auth-code-gated endpoints, with potential remote reachability via the fixed-port proxy

CVE: This vulnerability corresponds to CVE-2026-72809. Summary The kernel's CheckAuth grants RoleAdministrator to any request whose RemoteAddr is loopback 127.0.0.1, for a specific set of endpoints, and these localhost bypasses sit outside the accessAuthCode gate so they apply even when an access...

Duplicate Advisory: Localhost-trust admin bypass on auth-code-gated endpoints, with potential remote reachability via the fixed-port prox

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-3mp7-4rh5-jrv9. This link is maintained to preserve external references. Original Description SiYuan versions = v3.7.2 patched in v3.7.4 contain an authentication bypass vulnerability in the kernel's CheckAuth...

Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE

SummarySerena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port TCP 24282, hardcoded as 0x5EDA in constants.py. The server has no authentication, no CSRF protection, and no Host header validation. A DNS rebinding attack allows a malicious webpage to reach...

PYSEC-2026-3061 Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE

Summary Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port TCP 24282, hardcoded as 0x5EDA in constants.py. The server has no authentication, no CSRF protection, and no Host header validation. A DNS rebinding attack allows a malicious webpage to reach...

EUVD-2026-42077

Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE...

GHSA-37H2-6P4F-MP3Q Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE

Summary Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port TCP 24282, hardcoded as 0x5EDA in constants.py. The server has no authentication, no CSRF protection, and no Host header validation. A DNS rebinding attack allows a malicious webpage to reach...

Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE

Summary Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port TCP 24282, hardcoded as 0x5EDA in constants.py. The server has no authentication, no CSRF protection, and no Host header validation. A DNS rebinding attack allows a malicious webpage to reach...

Cross-site Request Forgery (CSRF)

Overview serena-agent is an A powerful MCP toolkit for coding, providing semantic retrieval and editing capabilities - the IDE for your agent Affected versions of this package are vulnerable to Cross-site Request Forgery CSRF in the unauthenticated Flask dashboard API, which is exposed on a fixed...

CVE-2026-49471 Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE

Serena is a powerful MCP toolkit for coding that provides semantic retrieval and editing capabilities. Prior to v1.5.2, Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port, with no authentication, no CSRF protection, and no Host header validation. A D...

CVE-2026-49471

Serena exposes an unauthenticated Flask API on a fixed port prior to v1.5.2, with no authentication, CSRF protection, or Host header validation. A DNS rebinding attack can reach this API from any browser and write arbitrary content to the agent’s persistent memory store, which the agent may read ...

CVE-2026-49471 Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE

Serena is a powerful MCP toolkit for coding that provides semantic retrieval and editing capabilities. Prior to v1.5.2, Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port, with no authentication, no CSRF protection, and no Host header validation. A D...

CVE-2026-49471 Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE

Serena is a powerful MCP toolkit for coding that provides semantic retrieval and editing capabilities. Prior to v1.5.2, Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port, with no authentication, no CSRF protection, and no Host header validation. A D...

PT-2026-56242

Name of the Vulnerable Software and Affected Versions Serena versions prior to 1.5.2 Description The built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port. This API lacks authentication, Cross-Site Request Forgery CSRF protection, and Host header validation. A D...

EUVD-2026-36445

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DNS resolver uses a predictable PRNG for generating DNS transaction IDs and defaults to a static UDP source port. This combination reduces the entrop...

Unity Linux 20.1060e / 20.1070e Security Update: dnsmasq (UTSA-2026-017412)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017412 advisory. A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface, dnsmasq uses a fixed port while forwardi...

ROS-20260209-73-0001

A vulnerability in the Avahi Wide-Area Local Area Network Service Discovery System is related to the use of insufficiently randomized values. Exploitation of the vulnerability could allow an attacker acting remotely to affect the confidentiality of protected information through a specially crafte...

The vulnerability of the Avahi service detection system in local networks arises from the use of insufficiently random values, allowing attackers to influence the confidentiality of the protected information.

The vulnerability of the Avahi service detection system in local networks is related to the use of insufficiently random values. Exploiting this vulnerability allows a malicious actor to influence the confidentiality of protected information by using specially crafted DNS requests, while using a...

Linux Distros Unpatched Vulnerability : CVE-2021-3448

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface, dnsmasq uses a fixed port while...