{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54283", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-12T17:46:37.292Z", "datePublished": "2026-06-22T16:46:16.706Z", "dateUpdated": "2026-06-22T16:46:16.706Z"}, "containers": {"cna": {"title": "Starlette: request.form() limits silently ignored for application/x-www-form-urlencoded enable DoS", "problemTypes": [{"descriptions": [{"cweId": "CWE-770", "lang": "en", "description": "CWE-770: Allocation of Resources Without Limits or Throttling", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/Kludex/starlette/security/advisories/GHSA-82w8-qh3p-5jfq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/Kludex/starlette/security/advisories/GHSA-82w8-qh3p-5jfq"}], "affected": [{"vendor": "Kludex", "product": "starlette", "versions": [{"version": ">= 0.4.1, < 1.3.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-22T16:46:16.706Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-82w8-qh3p-5jfq", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.4.1,1.3.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "starlette", "source": "cna", "vendor": "Kludex"}, "product": "starlette", "vendor": "kludex"}], "created": "2026-06-22T18:45:04.325566+00:00", "updated": "2026-06-22T20:15:04.388038+00:00", "vendors": ["kludex", "kludex$PRODUCT$starlette"]}