Most recent entries from all

Withdrawn: CLEANSTART-2026-LO26058 — Security fixes for CVE-2025-15558, CVE-2026-1229, CVE-2026-25934, CVE-2026-27896, CVE-2026-33252, CVE-2026-33762, CVE-2…

Withdrawn by the publisher.

Affected: CleanStart: gptscript

Multiple security vulnerabilities affect the gptscript package. These issues are resolved in later releases. See references for individual vulnerability details.

EUVD-2026-277262

fkie_cve-2026-33252

The Go MCP SDK used Go's standard encoding/json. Prior to version 1.4.1, the Go SDK's Streamable HTTP transport accepted browser-generated cross-site `POST` requests without validating the `Origin` header and without requiring `Content-Type: application/json`. In deployments without Authorization, especially stateless or sessionless configurations, this allows an arbitrary website to send MCP requests to a local server and potentially trigger tool execution. Version 1.4.1 contains a patch for the issue.

GHSA-89xv-2j6f-qhc8 — Cross-Site Tool Execution for HTTP Servers without Authorizatrion in github.com/modelcontextprotocol/go-sdk

Affected: Go: github.com/modelcontextprotocol/go-sdk

The Go SDK's Streamable HTTP transport accepted browser-generated cross-site `POST` requests without validating the `Origin` header and without requiring `Content-Type: application/json`. In deployments without Authorization, especially stateless or sessionless configurations, this allows an arbitrary website to send MCP requests to a local server and potentially trigger tool execution.

#### Impact:

A malicious website may have been able to send cross-site POST requests with `Content-Type: text/plain`, which due to CORS-safelisted properties would reach the MCP message handling without any CORS preflight barrier.

#### Fix:

The SDK was modified to perform `Content-Type` header validation for POST requests and introduced a configurable protection for verifying the origin of the request in commit a433a83. Users are advised to update to v1.4.1 to use this additional protection.

Note: v1.4.1 requires Go 1.25 or later.

#### Credits:

Thank you to Lê Minh Quân for reporting the issue.

RHSA-2026:21772 — Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.28.0 Release.

bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption bouncycastle: BC-JAVA: LDAP injection vulnerability in LDAPStoreHelper.java undici: Undici: HTTP Request Smuggling and Denial of Service due to duplicate Content-Length headers undici: undici: Denial of Service via unbounded memory consumption during WebSocket permessage-deflate decompression undici: undici: Denial of Service via crafted WebSocket frame with large length org.eclipse.jetty/jetty-server: Eclipse Jetty: Denial of Service due to unreleased JDK Inflater from compressed HTTP requests undici: Undici: Denial of Service via invalid WebSocket permessage-deflate extension parameter markdown-it: markdown-it: Denial of Service via Regular Expression Denial of Service in linkify function bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid minimatch: minimatch: Denial of Service via specially crafted glob patterns minimatch: Minimatch: Denial of Service via catastrophic backtracking in glob expressions svgo: SVGO: Denial of Service via XML entity expansion express-rate-limit: express-rate-limit: Denial of Service for IPv4 clients due to incorrect IPv6 subnet masking tar: tar: File overwrite via drive-relative symlink traversal flatted: flatted: Unbounded recursion DoS in parse() revive phase crypto/x509: crypto/tls: golang: Go: Denial of Service vulnera…