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CVE-2025-53634 PUBLISHED CVSS 8.699999809265137 HIGH

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.

EPSS 0.17% · 37.8th percentile

Risk Scores

CVSS v4.0
8.699999809265137
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS Score
0.17%
37.8th percentile

Affected Products

VendorProductVersions
github.comctfer-io/chall-manager0
ctfer-iochall-manager< 0.1.4, 0

Timeline

References

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