Vulnerability Description
Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. When decoding a scenario (i.e. a zip archive), the size of the decoded content is not checked, potentially leading to zip bombs decompression. 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 14042aa and shipped in v0.1.4.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ctfer-Io | Chall-Manager | < 0.1.4 |
Related Weaknesses (CWE)
References
- https://github.com/ctfer-io/chall-manager/commit/14042aa66a577caee777e10fe09adcfPatch
- https://github.com/ctfer-io/chall-manager/releases/tag/v0.1.4Release Notes
- https://github.com/ctfer-io/chall-manager/security/advisories/GHSA-r7fm-3pqm-ww5Vendor Advisory
FAQ
What is CVE-2025-53633?
CVE-2025-53633 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. When decoding a scenario (i.e. a zip archive), the size of the decoded content is not checked, potentially l...
How severe is CVE-2025-53633?
CVE-2025-53633 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-53633?
Check the references section above for vendor advisories and patch information. Affected products include: Ctfer-Io Chall-Manager.