CVE-2026-104850Published

MCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server

cve-program · CVE-2026-104850

Published

typescript-sdk

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "modelcontextprotocol",
                    "product": "typescript-sdk",
                    "versions": [
                        {
                            "version": ">= 1.12.0, < 1.31.0",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2.0.0, < 2.2.0",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-93491

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Oct 6, 2026, 4:08:21 PM

dateUpdated: Oct 6, 2026, 4:28:53 PM

1 related source bulletins · separate from aliases

WID-SEC-W-2026-4410: IBM App Connect Enterprise: Mehrere Schwachstellen

CVE-2026-100699 · CVE-2026-100700 · CVE-2026-100701 · CVE-2026-100702 · CVE-2026-101898 · CVE-2026-101900 · CVE-2026-101901 · CVE-2026-101902 · CVE-2026-101903 · CVE-2026-101904 · CVE-2026-101905 · CVE-2026-101906 · CVE-2026-101907 · CVE-2026-101908 · CVE-2026-101909 · CVE-2026-101915 · CVE-2026-101916 · CVE-2026-104850 · CVE-2026-106444 · CVE-2026-106445 · CVE-2026-106446 · CVE-2026-110869 · CVE-2026-111767 · CVE-2026-15187 · CVE-2026-33937 · CVE-2026-83745 · CVE-2026-84003 · CVE-2026-86535 · CVE-2026-90776 · CVE-2026-91863 · CVE-2026-91864 · CVE-2026-91865 · CVE-2026-91866 · CVE-2026-91867 · CVE-2026-93687 · CVE-2026-93749 · CVE-2026-94645 · CVE-2026-94646 · CVE-2026-96294

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-104850

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Awaiting Analysis

Weakness classifications: CWE-345 · CWE-522

Original publisher date fields

published: 2026-10-06T17:17:15.827

lastModified: 2026-10-06T20:03:40.690

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-6qxp-vccf-f47h

Published

@modelcontextprotocol/sdk

npm

SEMVER · introduced 1.12.0 → fixed 1.31.0

@modelcontextprotocol/client

npm

SEMVER · introduced 2.0.0 → fixed 2.2.0

Original source record · Cite this exact observation · Complete original publisher JSON