CVE-2026-81092 mcp-go before 0.56.0 Missing Host Header Validation Enables DNS Rebinding

mcp-go accepted requests on its HTTP transports without checking the Host header. StreamableHTTPServer.ServeHTTP in server/streamablehttp.go and SSEServer.ServeHTTP in server/sse.go served any request arriving over a loopback connection regardless of the host it named, and the SSE transport's...

CVE-2026-81092

mcp-go before 0.56.0 accepted HTTP requests on its Streamable HTTP and SSE transports without validating the Host header . Specifically, StreamableHTTPServer.ServeHTTP (server/streamable_http.go) and SSEServer.ServeHTTP (server/sse.go) served any request arriving over a loopback connection regard...

CVE-2026-81092 mcp-go before 0.56.0 Missing Host Header Validation Enables DNS Rebinding

mcp-go accepted requests on its HTTP transports without checking the Host header. StreamableHTTPServer.ServeHTTP in server/streamablehttp.go and SSEServer.ServeHTTP in server/sse.go served any request arriving over a loopback connection regardless of the host it named, and the SSE transport's...

EUVD-2026-67147

mcp-go accepted requests on its HTTP transports without checking the Host header. StreamableHTTPServer.ServeHTTP in server/streamablehttp.go and SSEServer.ServeHTTP in server/sse.go served any request arriving over a loopback connection regardless of the host it named, and the SSE transport's...

CVE-2026-81092 mcp-go before 0.56.0 Missing Host Header Validation Enables DNS Rebinding

mcp-go accepted requests on its HTTP transports without checking the Host header. StreamableHTTPServer.ServeHTTP in server/streamablehttp.go and SSEServer.ServeHTTP in server/sse.go served any request arriving over a loopback connection regardless of the host it named, and the SSE transport's...

SUSE CVE-2026-72018

In the Linux kernel, the following vulnerability has been resolved: dibs: loopback: validate offset and size in movedata The loopback movedata performs a memcpy into the registered DMB without checking whether offset + size exceeds the DMB length. Unlike real ISM hardware, which enforces memory...

CVE-2026-81102: Origin Validation Error

The Dash MCP server bound its listener to the loopback address but never checked the host a request named. src/mcpserverdash.py constructed the server for its network mode with the interface restricted to loopback and no transport-security settings, so a name that had been pointed at the loopback...

CVE-2026-81092: Origin Validation Error

mcp-go accepted requests on its HTTP transports without checking the Host header. StreamableHTTPServer.ServeHTTP in server/streamablehttp.go and SSEServer.ServeHTTP in server/sse.go served any request arriving over a loopback connection regardless of the host it named, and the SSE transport's...

PT-2026-82565

Name of the Vulnerable Software and Affected Versions mcp-go versions prior to 0.56.0 Description The software accepts requests on its HTTP transports without validating the Host header. Specifically, the StreamableHTTPServer.ServeHTTP function in server/streamable http.go and the...

CVE-2026-80349 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 address Koa reports is taken from the...

CVE-2026-80349

TarsWeb through 3.0.14 contains a critical authentication bypass (CVSS 9.8). The root cause is a combination of two misconfigurations: Koa's proxy option is set to true without restricting trusted upstream proxies, so the source address is taken from the caller-controlled X-Forwarded-For header; ...

CVE-2026-52776

Compliance-trestle Trestle is a tooling platform for managing compliance as code. In versions before 3.12.4 and versions 4.0.0 through 4.0.3, the URLSecurityValidator that guards trestle's remote-fetch paths against server-side request forgery can be bypassed to reach loopback, link-local,...

PT-2026-82068

OneUptime's webhook target check rejects private and loopback addresses given in IPv4 form and a small set of IPv6 forms, but has no case for the IPv4-mapped IPv6 range. The webhook delivery path calls SSRFProtection.validateWebhookTargetIsSafe, and the host-literal screening inside...

PT-2026-82067

Name of the Vulnerable Software and Affected Versions TarsWeb versions prior to 3.0.16 Description TarsWeb incorrectly determines if a request originates from a trusted local caller by relying on a client-controlled header. The app.js file enables the Koa proxy option without specifying trusted...

CVE-2026-52776

compliance-trestle (Trestle), a Python tooling platform for managing compliance-as-code via OSCAL, contains an SSRF bypass in its URLSecurityValidator (trestle/core/remote/security.py). The validator fails to canonicalize IPv4-mapped IPv6 literals (e.g., [::ffff:169.254.169.254]) before network m...

CVE-2026-55637

genieacs-mcp is an MCP server for GenieACS written in Go. Prior to 0.3.2, the Streamable HTTP transport in cmd/server/main.go creates an unauthenticated /mcp listener on the default MCPLISTENADDR value 127.0.0.1:8080 when MCPAUTHTOKEN is unset and the httpSrv.Startaddr branch does not validate th...

GHSA-CMWV-WF9P-P8WX genieacs-mcp: DNS rebinding reaches local GenieACS MCP Streamable HTTP transport

genieacs-mcp exposes a local Streamable HTTP MCP endpoint that accepts attacker-controlled Host and Origin headers. A malicious web page can use DNS rebinding to route browser requests to a victim's loopback MCP listener while preserving the attacker origin. The server accepts the request,...

CVE-2026-55637 genieacs-mcp: DNS rebinding reaches local GenieACS MCP Streamable HTTP transport

genieacs-mcp is an MCP server for GenieACS written in Go. Prior to 0.3.2, the Streamable HTTP transport in cmd/server/main.go creates an unauthenticated /mcp listener on the default MCPLISTENADDR value 127.0.0.1:8080 when MCPAUTHTOKEN is unset and the httpSrv.Startaddr branch does not validate th...

CVE-2026-55526 PraisonAI: SSRF protection bypass in `spider_tools._host_is_blocked()` via DNS-resolved hostnames (`127.0.0.1.nip.io`)

PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, spidertools.hostisblocked does not resolve ordinary hostnames before scrapepage fetches them. A hostname such as 127.0.0.1.nip.io passes validation and resolves to loopback, permitting internal HTTP access. The fix uses...

CVE-2026-55526 PraisonAI: SSRF protection bypass in `spider_tools._host_is_blocked()` via DNS-resolved hostnames (`127.0.0.1.nip.io`)

PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, spidertools.hostisblocked does not resolve ordinary hostnames before scrapepage fetches them. A hostname such as 127.0.0.1.nip.io passes validation and resolves to loopback, permitting internal HTTP access. The fix uses...