GHSA-x746-7m8f-x49c · 深刻度： medium · エコシステム： pip — Starlette: Arbitrary HTTP method dispatched to `HTTPEndpoint` attributes via `getattr`
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.
総合評価: CVE-2026-48817 は低リスク（25.1/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.21%、11 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-23 | 0.35% | 0.21% | -0.14% |
| 2 | 2026-06-18 | 0.04% | 0.35% | +0.31% |
| 3 | 2026-06-12 | — | 0.04% | — |
EPSS の全履歴 （全 3 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 5.3 | 3.1 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
GHSA-x746-7m8f-x49c · 深刻度： medium · エコシステム： pip — Starlette: Arbitrary HTTP method dispatched to `HTTPEndpoint` attributes via `getattr`
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-48817 not yet assigned priority: Debian including 1 source packages (starlette), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. | https://security-tracker.debian.org/tracker/CVE-2026-48817 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-48817 |
suse
|
medium | — | https://www.suse.com/security/cve/CVE-2026-48817/ |
ubuntu
|
medium | CVE-2026-48817 medium priority: Ubuntu including 1 source packages (starlette), 5 status rows across 5 suites (jammy, noble, questing, resolute, upstream): needs-triage 4, released 1. | https://ubuntu.com/security/CVE-2026-48817 |
| URL | タグ |
|---|---|
| https://github.com/Kludex/starlette/releases/tag/1.1.0 | Release Notes |
| https://github.com/Kludex/starlette/security/advisories/GHSA-x746-7m8f-x49c | Mitigation Vendor Advisory |