CVE-2025-53634

HIGH

Chall-Manager - DoS

Title source: llm
STIX 2.1

Description

Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. The HTTP Gateway processes headers, but with no timeout set. With a slow loris attack, an attacker could cause Denial of Service (DoS). Exploitation does not require authentication nor authorization, so anyone can exploit it. It should nonetheless not be exploitable as it is highly recommended to bury Chall-Manager deep within the infrastructure due to its large capabilities, so no users could reach the system. Patch has been implemented by commit 1385bd8 and shipped in v0.1.4.

Scores

CVSS v3 7.5
EPSS 0.0016
EPSS Percentile 36.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (2)
ctfer-io/chall-manager < 0.1.4
ctfer-io/chall-manager 0 - 0.1.4Go
Published Jul 10, 2025
Tracked Since Feb 18, 2026