CVE-2026-39974

CVE-2026-39974 affects the n8n-mcp component (Model Context Protocol server). In multi-tenant HTTP mode, an authenticated caller with a valid AUTH_TOKEN can trigger SSRF to arbitrary URLs supplied via per-request headers (instance-URL headers). The server reflects HTTP responses back through JSON...

CVE-2026-39974 n8n-MCP has an Authenticated SSRF via instance-URL header in multi-tenant HTTP mode

n8n-MCP is a Model Context Protocol MCP server that provides AI assistants with comprehensive access to n8n node documentation, properties, and operations. Prior to 2.47.4, an authenticated Server-Side Request Forgery in n8n-mcp allows a caller holding a valid AUTHTOKEN to cause the server to iss...

CVE-2026-5440

A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the Content-Length header. The server allocates memory directly based on the attacker supplied header value without enforcing an upper limit. A crafted HTTP request containing an extremely large Content-Length val...

CVE-2026-5440 Memory Exhaustion via Unbounded Content-Length

A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the Content-Length header. The server allocates memory directly based on the attacker supplied header value without enforcing an upper limit. A crafted HTTP request containing an extremely large Content-Length val...

CVE-2026-5440

A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the Content-Length header. The server allocates memory directly based on the attacker supplied header value without enforcing an upper limit. A crafted HTTP request containing an extremely large Content-Length val...

squid34: Fix of 2 CVEs

CVE-2026-33526: fix heap Use-After-Free in ICP traffic handling causing DoS - CVE-2026-32748: fix HttpRequest lifetime in ICP v3 queries preventing Use-After-Free DoS...

nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after session termination

A flaw was found in nghttp2. Due to missing internal state validation, the library continues to process incoming data even after a session has been terminated. A remote attacker could exploit this by sending a specially crafted HTTP/2 frame, leading to an assertion failure and a denial of service...

undici: Undici: HTTP Request Smuggling and Denial of Service due to duplicate Content-Length headers

A flaw was found in undici, a Node.js HTTP/1.1 client. A remote attacker could exploit this vulnerability by sending HTTP/1.1 requests that include duplicate Content-Length headers with different casing e.g., "Content-Length" and "content-length". This can lead to HTTP Request Smuggling, a...

Important: Red Hat Security Advisory: nodejs:22 security update

An update for the nodejs:22 module is now available for Red Hat Enterprise Linux 9. 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...

nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after session termination

A flaw was found in nghttp2. Due to missing internal state validation, the library continues to process incoming data even after a session has been terminated. A remote attacker could exploit this by sending a specially crafted HTTP/2 frame, leading to an assertion failure and a denial of service...

CLSA-2026-1775734284 Fix CVE(s): CVE-2026-32748, CVE-2026-33526

SECURITY UPDATE: denial of service via use-after-free in ICP - debian/patches/CVE-2026-33526.patch: remove duplicate rfc1738escape call in icpGetRequest that invalidated the previously escaped URL pointer - CVE-2026-33526 SECURITY UPDATE: denial of service via use-after-free in ICP request handli...

CVE-2026-5849

A vulnerability was determined in Tenda i12 1.0.0.113862. The impacted element is an unknown function of the component HTTP Handler. Executing a manipulation can lead to path traversal. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized...

CVE-2026-5849 Tenda i12 HTTP path traversal

A vulnerability was determined in Tenda i12 1.0.0.113862. The impacted element is an unknown function of the component HTTP Handler. Executing a manipulation can lead to path traversal. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized...

CVE-2026-5841

A weakness has been identified in Tenda i3 1.0.0.62204. The affected element is the function R7WebsSecurityHandler of the component HTTP Handler. Executing a manipulation can lead to path traversal. The attack can be executed remotely. The exploit has been made available to the public and could b...

GHSA-CRH9-3GJH-M6GC api-lab-mcp vulnerable to SSRF

A weakness has been identified in atototo api-lab-mcp up to 0.2.1. This affects the function analyzeapispec/generatetestscenarios/testhttpendpoint of the file src/mcp/http-server.ts of the component HTTP Interface. This manipulation of the argument source/url causes server-side request forgery. T...

api-lab-mcp vulnerable to SSRF

A weakness has been identified in atototo api-lab-mcp up to 0.2.1. This affects the function analyzeapispec/generatetestscenarios/testhttpendpoint of the file src/mcp/http-server.ts of the component HTTP Interface. This manipulation of the argument source/url causes server-side request forgery. T...

CVE-2026-5832

A weakness has been identified in atototo api-lab-mcp up to 0.2.1. This affects the function analyzeapispec/generatetestscenarios/testhttpendpoint of the file src/mcp/http-server.ts of the component HTTP Interface. This manipulation of the argument source/url causes server-side request forgery. T...

EUVD-2026-20831

A weakness has been identified in atototo api-lab-mcp up to 0.2.1. This affects the function analyzeapispec/generatetestscenarios/testhttpendpoint of the file src/mcp/http-server.ts of the component HTTP Interface. This manipulation of the argument source/url causes server-side request forgery. T...

CVE-2026-5832

Affects atototo api-lab-mcp up to 0.2.1. The vulnerability resides in src/mcp/http-server.ts (function analyze_api_spec/generate_test_scenarios/test_http_endpoint) and stems from manipulating the argument source/url, enabling server-side request forgery. Exploitation is possible remotely, and the...

CVE-2026-5832 atototo api-lab-mcp HTTP http-server.ts test_http_endpoint server-side request forgery

A weakness has been identified in atototo api-lab-mcp up to 0.2.1. This affects the function analyzeapispec/generatetestscenarios/testhttpendpoint of the file src/mcp/http-server.ts of the component HTTP Interface. This manipulation of the argument source/url causes server-side request forgery. T...