Starlette: Arbitrary HTTP method dispatched to `HTTPEndpoint` attributes via `getattr`
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Kludex | starlette | affected |
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No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Kludex | Starlette |
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| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-4711-1 | starlette security update |
Debian DSA |
DSA-6478-1 | starlette security update |
Github GHSA |
GHSA-x746-7m8f-x49c | Starlette: Arbitrary HTTP method dispatched to `HTTPEndpoint` attributes via `getattr` |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.213% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Kludex
Kludex starlette |
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| Vendors & Products |
Kludex
Kludex starlette |
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-749 | |
| References |
| |
| Metrics |
threat_severity
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ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | Starlette is a lightweight ASGI framework/toolkit. In versions 1.0.1 and below, when dispatching a request, HTTPEndpoint selects the handler by lowercasing the HTTP method and looking it up as an attribute with getattr, without restricting the lookup to a known set of HTTP verbs. When an HTTPEndpoint subclass is registered through Route(...) without an explicit methods= argument, the route does not constrain the method and every method reaches the endpoint. If a non-standard HTTP method whose lowercased name matches an attribute on the endpoint subclass reaches the endpoint, that attribute is invoked as if it were a request handler. An attacker can use this to reach methods that were never meant to be HTTP handlers, such as internal helpers, without the authorization checks applied by the intended public handler. An application (including Starlette-based frameworks like FastAPI) is affected if it registers an HTTPEndpoint subclass via Route(...) without explicitly setting methods=, and that subclass includes extra methods named like non-standard HTTP verbs that take one request argument and return a response. This issue has been fixed in version 1.1.0. | |
| Title | Starlette: Arbitrary HTTP method dispatched to `HTTPEndpoint` attributes via `getattr` | |
| Weaknesses | CWE-470 | |
| References |
| |
| Metrics |
cvssV3_1
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