OpenClaude's MCP OAuth Callback: State Check Bypass via error Param Leads to DoS
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Gitlawb | openclaude | affected |
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| Vendor | Product | Versions | ||||||||
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| Gitlawb | Openclaude |
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| Source | ID | Title |
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Github GHSA |
GHSA-c73c-x77g-854r | OpenClaude MCP OAuth Callback: State Check Bypass via error Param Leads to DoS |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.255% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:gitlawb:openclaude:*:*:*:*:*:*:*:* |
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| First Time appeared |
Gitlawb
Gitlawb openclaude |
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| Vendors & Products |
Gitlawb
Gitlawb openclaude |
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| Metrics |
ssvc
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| Description | OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Prior to version 0.5.1, the OpenClaude MCP authentication flow starts a temporary local HTTP server to handle OAuth callbacks. To prevent CSRF attacks, the server validates a state parameter against an internally stored value. However, due to a logic flaw in the order of conditionals, an attacker can completely bypass this check and force the server to shut down — without knowing the state value at all. This issue has been patched in version 0.5.1. | |
| Title | OpenClaude's MCP OAuth Callback: State Check Bypass via error Param Leads to DoS | |
| Weaknesses | CWE-352 CWE-400 |
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| References |
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| Metrics |
cvssV3_1
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