tsParticles: A single anonymous MCP session can monopolize HTTP mode and deny new clients
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| tsparticles | tsparticles | affected |
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| @tsparticles | mcp-server | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Tsparticles | Mcp-server |
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| Tsparticles | Tsparticles |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-h7c4-q426-7jh9 | tsParticles: A single anonymous MCP session can monopolize HTTP mode and deny new clients |
No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.291% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Tsparticles
Tsparticles mcp-server Tsparticles tsparticles |
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| Vendors & Products |
Tsparticles
Tsparticles mcp-server Tsparticles tsparticles |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | tsParticles is a TypeScript library for creating highly customizable particle animations. Prior to 4.3.2, the HTTP mode of @tsparticles/mcp-server reuses one stateful StreamableHTTPServerTransport for every client. An unauthenticated client that sends the first initialize request without an mcp-session-id claims the shared transport state, causing later independent clients to receive Server already initialized and preventing them from establishing sessions until the process restarts. The first client's session remains functional. This issue is fixed in version 4.3.2. | |
| Title | tsParticles: A single anonymous MCP session can monopolize HTTP mode and deny new clients | |
| Weaknesses | CWE-400 | |
| References |
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| Metrics |
cvssV4_0
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