GHSA-8r9q-7v3j-jr4gPublished

MCP TypeScript SDK UriTemplate Exploded Array Pattern ReDoS

cve-program · CVE-2026-0621

Published

MCP TypeScript SDK

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:npm/%40modelcontextprotocol/sdk",
                    "product": "MCP TypeScript SDK",
                    "repo": "https://github.com/modelcontextprotocol/typescript-sdk",
                    "vendor": "Anthropic",
                    "versions": [
                        {
                            "lessThanOrEqual": "1.25.1",
                            "status": "affected",
                            "version": "0",
                            "versionType": "semver"
                        }
                    ]
                }

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

euvd · EUVD-2026-0800

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: Jan 5, 2026, 8:57:14 PM

dateUpdated: Oct 8, 2026, 3:21:41 PM

1 related source bulletins · separate from aliases

WID-SEC-W-2026-0328: IBM App Connect Enterprise Certified Container: Mehrere Schwachstellen

CVE-2025-13491 · CVE-2025-61727 · CVE-2025-61729 · CVE-2026-0621 · CVE-2026-21226 · CVE-2026-22817 · CVE-2026-22818

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-2026-0621

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: Analyzed

Weakness classifications: CWE-1333

Original publisher date fields

published: 2026-01-05T21:16:14.533

lastModified: 2026-10-26T21:10:00.170

1 source CPE criteria · context only

cpe:2.3:a:lfprojects:mcp_typescript_sdk:*:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

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

osv · GHSA-8r9q-7v3j-jr4g

Published

@modelcontextprotocol/sdk

npm

SEMVER · introduced 1.3.0 → fixed 1.25.2

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