CVE-2026-48817

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Source
https://cve.org/CVERecord?id=CVE-2026-48817
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48817.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-48817
Aliases
Downstream
Related
Published
2026-06-17T19:48:03.441Z
Modified
2026-07-15T01:49:21.188690824Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
Starlette: Arbitrary HTTP method dispatched to `HTTPEndpoint` attributes via `getattr`
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48817.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-470"
    ]
}
References

Affected packages

Git / github.com/kludex/starlette

Affected ranges

Type
GIT
Repo
https://github.com/kludex/starlette
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a4ff83b1aacaf8955e241dd00444c27823be163a
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.1.0"
        }
    ]
}

Affected versions

0.*
0.1.0
0.1.1
0.1.10
0.1.11
0.1.12
0.1.13
0.1.14
0.1.15
0.1.16
0.1.17
0.1.2
0.1.3
0.1.4
0.1.5
0.1.6
0.1.7
0.1.8
0.1.9
0.10.0
0.10.1
0.10.4
0.11.1
0.11.2
0.11.3
0.11.4
0.12.0
0.12.0.b1
0.12.0.b2
0.12.0.b3
0.12.11
0.12.12
0.12.13
0.12.2
0.12.3
0.12.4
0.12.5
0.12.6
0.12.7
0.12.8
0.12.9
0.13.0
0.13.1
0.13.2
0.13.3
0.13.4
0.13.5
0.13.6
0.13.7
0.13.8
0.14.0
0.14.1
0.14.2
0.15.0
0.16.0
0.17.0
0.17.1
0.18.0
0.19.0
0.19.1
0.2.1
0.2.2
0.2.3
0.20.0
0.20.1
0.20.2
0.20.3
0.20.4
0.21.0
0.22.0
0.23.0
0.23.1
0.24.0
0.25.0
0.26.0
0.26.0.post1
0.26.1
0.27.0
0.28.0
0.29.0
0.3.0
0.3.1
0.3.2
0.3.3
0.3.4
0.3.5
0.3.6
0.3.7
0.30.0
0.31.0
0.31.1
0.32.0
0.32.0.post1
0.33.0
0.34.0
0.35.0
0.35.1
0.36.0
0.36.1
0.36.2
0.36.3
0.37.0
0.37.1
0.37.2
0.38.0
0.38.1
0.38.2
0.38.3
0.38.4
0.38.5
0.38.6
0.39.0
0.39.1
0.39.2
0.4.0
0.4.1
0.4.2
0.40.0
0.41.0
0.41.1
0.41.2
0.41.3
0.42.0
0.43.0
0.44.0
0.45.0
0.45.1
0.45.2
0.45.3
0.46.0
0.46.1
0.46.2
0.47.0
0.47.1
0.47.2
0.47.3
0.48.0
0.49.0
0.49.1
0.49.2
0.49.3
0.5.0
0.5.1
0.5.2
0.5.3
0.5.4
0.5.5
0.50.0
0.51.0
0.52.0
0.52.1
0.6.1
0.6.2
0.6.3
0.7.0
0.7.1
0.7.2
0.7.3
0.7.4
0.8.0
0.8.1
0.8.2
0.8.3
0.8.4
0.8.5
0.8.6
0.8.7
0.8.8
0.9.0
0.9.1
0.9.10
0.9.11
0.9.2
0.9.3
0.9.4
0.9.5
0.9.6
0.9.7
0.9.8
0.9.9
1.*
1.0.0
1.0.0rc1
1.0.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48817.json"