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CVE-2026-111771: @modelcontextprotocol/sdk >= 1.6.0, < 1.32.0; +3 more affected products
CVE-2026-111771 affects @modelcontextprotocol/sdk. CVSS 3.1 base score 6.8 (GitHub Advisory Database). Affected range: >= 1.6.0, < 1.32.0. Fixed version: 1.32.0. Affected range: >= 2.0.0, < 2.3.0. Fixed version: 2.3.0. Affected range: >= 2.0.0, < 2.0.2. Fixed version: 2.0.2. Affected range: >= 2.0.0, < 2.3.1. Fixed version: 2.3.1.
Affected technology
@modelcontextprotocol/sdk · >= 1.6.0, < 1.32.0
Vendor not specified by the source
@modelcontextprotocol/server · >= 2.0.0, < 2.3.0
Vendor not specified by the source
@modelcontextprotocol/express · >= 2.0.0, < 2.0.2
Vendor not specified by the source
@modelcontextprotocol/server-legacy · >= 2.0.0, < 2.3.1
Vendor not specified by the source
Component: Not specified by the source
Attack conditions (GitHub Advisory Database, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required
What an attacker can do
GitHub Advisory Database’s CVSS 3.1 assessment rates confidentiality and integrity impact as high; availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.
- Product
- @modelcontextprotocol/sdk
- CCR priority
- 27.2 /100 (P4)
- CVSS 3.1
- 6.8 /10 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N · GitHub Advisory Database
- KEV
- no
Provenance
- GitHub Advisory Database · Source record · observed 2026-10-21 04:17:24.410927+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-111771.html