CVE-2023-30798

MultipartParser DOS with too many fields or files in Starlette Framework

State: Published
Severity: 7.5 High
Published: Apr 21, 2023
Updated: Jul 15, 2026
Reserved: Apr 18, 2023

Description

There MultipartParser usage in Encode's Starlette python framework before versions 0.25.0 allows an unauthenticated and remote attacker to specify any number of form fields or files which can cause excessive memory usage resulting in denial of service of the HTTP service.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	VulnCheck

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
StarletteEncode	before 0.25.0Affected

References

https://github.com/encode/starlette/security/advisories/GHSA-74m5-2c7w-9w3xvendor-advisory
https://github.com/encode/starlette/commit/8c74c2c8dba7030154f8af18e016136bea1938fapatch
https://vulncheck.com/advisories/starlette-multipartparser-dosthird-party-advisory

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