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GHSA-p9x3-w98f-7j3q
No affected components available
Summary
The MCP token service did not validate token ownership, allowing a Creator within the same base to read, regenerate, or delete another user's MCP tokens if the token ID was known.
Details
McpTokenService.get(), regenerateToken(), and delete() did not filter by fk_user_id. The analogous ApiTokensService correctly enforced ownership.
Impact
Limited — requires Creator role and knowledge of target token ID. Primary risk is denial of service (invalidating tokens) and scoped token disclosure.
Credit
This issue was reported by @bugbunny-research (bugbunny.ai).
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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