CVE-2026-49471

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...

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...

PYSEC-2026-1656 MLFlow is vulnerable to DNS rebinding attacks due to a lack of Origin header validation

MLFlow versions up to and including 3.4.0 are vulnerable to DNS rebinding attacks due to a lack of Origin header validation in the MLFlow REST server. This vulnerability allows malicious websites to bypass Same-Origin Policy protections and execute unauthorized calls against REST endpoints. An...

PYSEC-2026-1617 Model Context Protocol (MCP) Python SDK does not enable DNS rebinding protection by default

Description The Model Context Protocol MCP Python SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication using FastMCP with streamable HTTP or SSE transport, and has not configured...

PYSEC-2026-1620 Neo4j Cypher MCP server is vulnerable to DNS rebinding

Impact DNS rebinding vulnerability in Neo4j Cypher MCP server allows malicious websites to bypass Same-Origin Policy protections and execute unauthorised tool invocations against locally running Neo4j MCP instances. The attack relies on the user being enticed to visit a malicious website and spen...

GO-2026-5870 MCP Toolbox for Databases vulnerable to DNS rebinding attacks in github.com/googleapis/mcp-toolbox

MCP Toolbox for Databases vulnerable to DNS rebinding attacks in github.com/googleapis/mcp-toolbox...

GO-2026-5909 Coder's workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID in github.com/coder/coder

Coder's workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID in github.com/coder/coder...

PYSEC-2026-2050 Domain restrictions bypass via DNS Rebinding in WireMock and WireMock Studio webhooks, proxy and recorder modes

Impact The proxy mode of WireMock, can be protected by the network restrictions configuration, as documented in Preventing proxying to and recording from specific target addresses. These restrictions can be configured using the domain names, and in such a case the configuration is vulnerable to t...

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...

Coder's workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID

Summary UpsertWorkspaceApp overwrites an existing app's agentid on a primary-key conflict and insertAgentApp accepts the app ID from the provisioner's CompleteJob payload without verifying it belongs to the workspace being built. CompleteJob runs under dbauthz.AsProvisionerd so the authorization...

GHSA-9RJW-3GWP-F59V Coder's workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID

Summary UpsertWorkspaceApp overwrites an existing app's agentid on a primary-key conflict and insertAgentApp accepts the app ID from the provisioner's CompleteJob payload without verifying it belongs to the workspace being built. CompleteJob runs under dbauthz.AsProvisionerd so the authorization...

nodejs: Node.js: Silent authority rebinding due to embedded-nul hostnames in TLS handling

A flaw was found in Node.js. This vulnerability in the TLS Transport Layer Security hostname handling allows embedded null characters in hostnames. This can lead to silent authority rebinding, potentially enabling an attacker to redirect network traffic to an unintended server and disclose...

nodejs: Node.js: Silent authority rebinding due to embedded-nul hostnames in TLS handling

A flaw was found in Node.js. This vulnerability in the TLS Transport Layer Security hostname handling allows embedded null characters in hostnames. This can lead to silent authority rebinding, potentially enabling an attacker to redirect network traffic to an unintended server and disclose...

nodejs: Node.js: Silent authority rebinding due to embedded-nul hostnames in TLS handling

A flaw was found in Node.js. This vulnerability in the TLS Transport Layer Security hostname handling allows embedded null characters in hostnames. This can lead to silent authority rebinding, potentially enabling an attacker to redirect network traffic to an unintended server and disclose...

Important: Red Hat Security Advisory: nodejs22 security, bug fix, and enhancement update

An update for nodejs22 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

nodejs: Node.js: Silent authority rebinding due to embedded-nul hostnames in TLS handling

A flaw was found in Node.js. This vulnerability in the TLS Transport Layer Security hostname handling allows embedded null characters in hostnames. This can lead to silent authority rebinding, potentially enabling an attacker to redirect network traffic to an unintended server and disclose...

nodejs: Node.js: Silent authority rebinding due to embedded-nul hostnames in TLS handling

A flaw was found in Node.js. This vulnerability in the TLS Transport Layer Security hostname handling allows embedded null characters in hostnames. This can lead to silent authority rebinding, potentially enabling an attacker to redirect network traffic to an unintended server and disclose...

GHSA-6G2F-W7G3-77VF 9router has an Incomplete Fix: Local-Only Access Gate Bypass in 9router via Host Header SpoofING

Summary The fix for CVE-2026-46339 unauthenticated RCE via unprotected MCP plugin routes introduced a local-only access gate in src/dashboardGuard.js that restricts spawn-capable routes /api/mcp/, /api/tunnel/, /api/cli-tools/ to loopback requests. The gate determines "local" by inspecting the Ho...