Chainlit 2.12.0 SSRF via Semicolon Path Segment in MCP allowed_urls
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Chainlit | Chainlit | unaffected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Chainlit | Chainlit |
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No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.221% probability within 30 days)
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| Description | Chainlit 2.12.0 contains a server-side request forgery vulnerability that allows unauthenticated attackers to bypass path-scoped MCP allowed_urls entries because validate_mcp_url does not reject the semicolon character. Attackers can submit MCP URLs with '..;' segments to the /mcp endpoint, causing requests to paths outside the operator's grant on origins that strip semicolon path parameters. | |
| Title | Chainlit 2.12.0 SSRF via Semicolon Path Segment in MCP allowed_urls | |
| First Time appeared |
Chainlit
Chainlit chainlit |
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| Weaknesses | CWE-918 | |
| CPEs | cpe:2.3:a:chainlit:chainlit:2.12.0:*:*:*:*:*:*:* | |
| Vendors & Products |
Chainlit
Chainlit chainlit |
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| References |
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| Metrics |
cvssV3_1
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