CVE-2026-6556

@fastify/express versions 4.0.6 and earlier only rewrite the plugin prefix for middleware mount paths when the path argument is a string. Non-string mount paths arrays of paths and regular expressions are left unprefixed inside prefixed plugin scopes, so middleware registered with those forms doe...

CVE-2026-6556 @fastify/express vulnerable to middleware bypass via non-string mount paths in prefixed plugins

@fastify/express versions 4.0.6 and earlier only rewrite the plugin prefix for middleware mount paths when the path argument is a string. Non-string mount paths arrays of paths and regular expressions are left unprefixed inside prefixed plugin scopes, so middleware registered with those forms doe...

CVE-2026-6556 @fastify/express vulnerable to middleware bypass via non-string mount paths in prefixed plugins

@fastify/express versions 4.0.6 and earlier only rewrite the plugin prefix for middleware mount paths when the path argument is a string. Non-string mount paths arrays of paths and regular expressions are left unprefixed inside prefixed plugin scopes, so middleware registered with those forms doe...

CVE-2026-6556

The CVE concerns @fastify/express 4.0.6 and earlier, where non-string mount paths (arrays/regex) are not prefixed inside prefixed plugin scopes. This causes middleware registered with those forms to not match the actual prefixed request path, potentially bypassing path-scoped security middleware ...

CVE-2026-6556 @fastify/express vulnerable to middleware bypass via non-string mount paths in prefixed plugins

@fastify/express versions 4.0.6 and earlier only rewrite the plugin prefix for middleware mount paths when the path argument is a string. Non-string mount paths arrays of paths and regular expressions are left unprefixed inside prefixed plugin scopes, so middleware registered with those forms doe...

CVE-2026-6556: Improper Authorization

@fastify/express versions 4.0.6 and earlier only rewrite the plugin prefix for middleware mount paths when the path argument is a string. Non-string mount paths arrays of paths and regular expressions are left unprefixed inside prefixed plugin scopes, so middleware registered with those forms doe...

PT-2026-53878

Name of the Vulnerable Software and Affected Versions @fastify/express versions prior to 4.0.7 Description A middleware scoping flaw exists where plugin prefixes are not applied to middleware mount paths when the mount path is provided as an array or a regular expression. This occurs due to...

CVE-2026-56278: Use of Hard-coded Credentials

Flowise before 3.1.0 affected versions 3.0.13 and earlier uses a weak hardcoded default secret 'flowise' for the express-session middleware when the EXPRESSSESSIONSECRET environment variable is not set packages/server/src/enterprise/middleware/passport/index.ts. Because this default secret is...

CVE-2025-71381: Improper Neutralization of CRLF Sequences in HTTP Headers

Hono before 4.10.2 fixed in 4.10.3 contains a flaw in its CORS middleware: when the origin is not set to "", the middleware copies the Vary header from the incoming request into the response. Because Vary is a response header that should be managed by the server, an attacker can supply arbitrary...

CVE-2026-55603

A flaw was found in http-proxy-middleware. A remote attacker could exploit a vulnerability in the fixRequestBody function, which is used to re-emit a request body. By injecting carriage return and line feed characters \r\n into a request body key or value, an attacker can bypass security policies...

PT-2026-53671

Name of the Vulnerable Software and Affected Versions Mythic versions prior to 3.4.0.60 Description An authorization bypass exists that allows authenticated users with the spectator role to perform unauthorized write operations. This occurs because the 'eventing import automatic webhook' endpoint...

spikster-auth-bypass-cve

GitHub Security Advisory: Spikster — Complete API Authenticati...

@microsoft/kiota-http-fetchlibrary: Bearer token and Cookie leak across origin on redirect due to case-mismatched scrub in fetchRequestAdapter

Summary @microsoft/kiota-http-fetchlibrary's RedirectHandler is documented as stripping Authorization and Cookie from cross-origin redirect targets, but the default scrubSensitiveHeaders callback in RedirectHandlerOptions uses case-sensitive property deletion delete headers.Authorization, delete...

GO-2026-5760 Traefik Kubernetes CRD allows unauthorized cross-namespace middleware binding in github.com/traefik/traefik

Traefik Kubernetes CRD allows unauthorized cross-namespace middleware binding in github.com/traefik/traefik...

GO-2026-5658 MCP Registry has open redirect via protocol-relative path in trailing-slash middleware in github.com/modelcontextprotocol/registry

MCP Registry has open redirect via protocol-relative path in trailing-slash middleware in github.com/modelcontextprotocol/registry...

GO-2026-5505 Portainer's Kubernetes middleware continues after token validation failure, bypassing endpoint authorization in github.com/portainer/portainer

Portainer's Kubernetes middleware continues after token validation failure, bypassing endpoint authorization in github.com/portainer/portainer. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is...

Insufficient Verification of Data Authenticity

Overview Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity via the realIP function. An attacker can gain unauthorized access to restricted resources, evade rate limiting, or manipulate security logs by supplying a crafted X-Forwarded-For header...

GHSA-3FXJ-6JH8-HVHX chi Has an IP Spoofing Vulnerability in `middleware.RealIP`

Summary The RealIP middleware in go-chi/chi is vulnerable to IP spoofing because it blindly trusts the first leftmost element of the X-Forwarded-For HTTP header. This allows a remote attacker to bypass IP-based access control lists ACLs and rate-limiting mechanisms by providing a spoofed IP addre...

Use of Less Trusted Source

Overview Affected versions of this package are vulnerable to Use of Less Trusted Source via the realIP function. An attacker can bypass IP-based access controls, rate limiting, and audit logging by sending crafted headers such as X-Forwarded-For, X-Real-IP, or True-Client-IP without validation...

Use of Less Trusted Source

Overview Affected versions of this package are vulnerable to Use of Less Trusted Source via the realIP function. An attacker can bypass IP-based access controls, rate limiting, and audit logging by sending crafted headers such as X-Forwarded-For, X-Real-IP, or True-Client-IP without validation...