High severity7.1NVD Advisory· Published Aug 25, 2026

CVE-2026-79786

Description

Coroot's unauthenticated MCP OAuth dynamic client registration endpoint accepts any syntactically valid redirect URI without validation, allowing attackers to register clients pointing to attacker-controlled hosts. Attackers can send authorization URLs to signed-in users, capture their authorization codes upon consent approval, and exchange them for access tokens to hijack MCP sessions.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Coroot/corootllm-create

Patches

Vulnerability mechanics

References

github.com/coroot/coroot/blob/v1.24.5/api/mcp_oauth.gonvd
github.com/coroot/coroot/issues/929nvd
www.vulncheck.com/advisories/coroot-1.20.2-through-1.24.5-unvalidated-redirect-uri-in-mcp-oauth-client-registrationnvd

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