CVE-2026-104850
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
Description
MCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| npm | @modelcontextprotocol/sdk | >=1.12.0,<1.31.0 | 1.31.0 |
| npm | @modelcontextprotocol/client | >=2.0.0,<2.2.0 | 2.2.0 |
References
- https://github.com/modelcontextprotocol/typescript-sdk/commit/edd12e282620ebf770d67316f19cf91d4112a1bd
- https://github.com/modelcontextprotocol/typescript-sdk/pull/2887
- https://github.com/modelcontextprotocol/typescript-sdk/releases/tag/v2.2.0
- https://github.com/modelcontextprotocol/typescript-sdk/security/advisories/GHSA-6qxp-vccf-f47h
- https://github.com/modelcontextprotocol/typescript-sdk
CWEs
CWE-345 CWE-522
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.