PyPi: Fastchat

CVE-2024-10907

Safety vulnerability ID: 76281

This vulnerability was reviewed by experts

The information on this page was manually curated by our Cybersecurity Intelligence Team.

Created at Mar 20, 2025 Updated at Sep 20, 2025
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Advisory

Affected versions of the FastChat package are vulnerable to Denial of Service through improper handling of multipart request boundaries. The server fails to validate excessive characters appended to multipart boundaries, causing an infinite loop processing for each extra character.

An unauthenticated remote attacker can exploit this vulnerability by sending malformed multipart requests with arbitrary characters at the end of the boundary, resulting in excessive CPU consumption and complete service unavailability for all users.

Affected package

fastchat

Latest version: 0.1.0

fastchat with guidance support

Affected versions

Fixed versions

Vulnerability changelog

This vulnerability has no description

Resources

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Severity Details

CVSS Base Score

HIGH 7.5

CVSS v3 Details

HIGH 7.5
Attack Vector (AV)
NETWORK
Attack Complexity (AC)
LOW
Privileges Required (PR)
NONE
User Interaction (UI)
NONE
Scope (S)
UNCHANGED
Confidentiality Impact (C)
NONE
Integrity Impact (I)
NONE
Availability Availability (A)
HIGH