--- title: "CVE-2026-111767: MCP TypeScript SDK - Broken Access Control" description: "MCP TypeScript SDK 1.24.0 to < 1.32.0 contains a broken access control vulnerability caused by lack of session verification in the experimental taskStore feature, letting clients sharing InMemoryTaskStore access and manipulate each other's tasks, exploit requires shared InMemoryTaskStore usage." url: https://panop.io/threat-heartbeat/CVE-2026-111767/ --- # CVE-2026-111767 MCP TypeScript SDK - Broken Access Control MCP TypeScript SDK 1.24.0 to < 1.32.0 contains a broken access control vulnerability caused by lack of session verification in the experimental taskStore feature, letting clients sharing InMemoryTaskStore access and manipulate each other's tasks, exploit requires shared InMemoryTaskStore usage. CVSS base score 8.6 /10 High CISA KEV Not listed Public exploit None known Authentication Not required [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-111767) ## Details Type Broken Access Control Impact Broken Access Control CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L Published 20 October 2026 Updated 21 October 2026 Weakness [CWE-639](https://cwe.mitre.org/data/definitions/639.html) ## Vendor fix Update to version 1.32.0 or later. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-111767](https://nvd.nist.gov/vuln/detail/CVE-2026-111767) - [https://github.com/modelcontextprotocol/typescript-sdk/pull/2925](https://github.com/modelcontextprotocol/typescript-sdk/pull/2925) - [https://github.com/modelcontextprotocol/typescript-sdk/security/advisories/GHSA-22jm-h49p-29qw](https://github.com/modelcontextprotocol/typescript-sdk/security/advisories/GHSA-22jm-h49p-29qw) - [https://github.com/modelcontextprotocol/typescript-sdk/commit/727075b5bbeb77fbea22041b36b72a73042160fa](https://github.com/modelcontextprotocol/typescript-sdk/commit/727075b5bbeb77fbea22041b36b72a73042160fa) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)