HIGH🇬🇧 English

CVE-2026-54283

CVSS 7.5v3.1pub. 2026-06-22upd. 2026-06-26

Starlette is a lightweight ASGI framework/toolkit. From 0.4.1 until 1.3.1, request.form() accepts max_fields and max_part_size to bound resource consumption while parsing form data. These limits are enforced for multipart/form-data, but silently ignored for application/x-www-form-urlencoded. An unauthenticated attacker can therefore send a urlencoded body with an arbitrarily large number of fields or an arbitrarily large field, even when the application configured limits it believed would apply. This vulnerability is fixed in 1.3.1.

oryginał EN
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Encode Starlette

    APP
    Encode
    0.4.1 – 1.3.1 (bez)
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Tagi
Auth Bypass
CWE
Referencje

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