Watch card · compiled automatically, not analysed
CVE-2026-111771
MCP TypeScript SDK: Server bearer authentication accepted tokens issued for another service
AI summaryMCP TypeScript SDK server bearer auth accepted tokens issued for other services, weakening MCP server access control.
Our research pipeline compiles this page from public data. It contains no human judgement from PlainCVE; rely on the original advisories for facts.
Our status
Candidate — Not queued for research yet. Below is public data only.
Key numbers
- CVSS
- 6.8 v3.x
- CISA KEV
- Not listed
- EPSS
- —
- Momentum
- —
Timeline
- 2026-10-20DisclosedGitHub Advisory Database
How much time similar vulnerabilities gave
This item is not mapped to a category yet, so here are the overall numbers: of 390 vulnerabilities disclosed since 2025 and added to KEV, the median time from disclosure to KEV was 5 days; 54% were added within 7 days.
This one: not in KEV so far (that does not mean it is not exploited).
Counts only vulnerabilities CISA has confirmed as exploited; disclosure is the NVD publication date, which can differ from the vendor advisory.
Affected packages (OSV)
| Ecosystem | Package | From | Fixed in |
|---|---|---|---|
| npm | @modelcontextprotocol/sdk | 1.6.0 | 1.32.0 |
| npm | @modelcontextprotocol/server | 2.0.0 | 2.3.0 |
| npm | @modelcontextprotocol/express | 2.0.0 | 2.0.2 |
| npm | @modelcontextprotocol/server-legacy | 2.0.0 | 2.3.1 |
Primary sources
Watch cards update with This week every 3 hours. Once we write this up, this URL will point to the write-up.