High severity7.5NVD Advisory· Published Jul 10, 2025· Updated Jun 17, 2026
CVE-2025-53634
CVE-2025-53634
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/ctfer-io/chall-managerGo | < 0.1.4 | 0.1.4 |
Affected products
4cpe:2.3:a:ctfer-io:chall-manager:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:ctfer-io:chall-manager:*:*:*:*:*:*:*:*range: <0.1.4
- (no CPE)range: < 0.1.4
- ghsa-coords2 versionspkg:golang/github.com/ctfer-io/chall-managerpkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Tumbleweed
< 0.1.4+ 1 more
- (no CPE)range: < 0.1.4
- (no CPE)range: < 0.0.20250730T213748-1.1
Patches
Vulnerability mechanics
References
5- github.com/ctfer-io/chall-manager/commit/1385bd869142651146cd0b123085f91cec698636nvdPatchWEB
- github.com/advisories/GHSA-ggmv-j932-q89qghsaADVISORY
- github.com/ctfer-io/chall-manager/security/advisories/GHSA-ggmv-j932-q89qnvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2025-53634ghsaADVISORY
- github.com/ctfer-io/chall-manager/releases/tag/v0.1.4nvdRelease NotesWEB
News mentions
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