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TI-2026-25257 Aliases CVE-2026-32768GHSA-mw24-f3xh-j3qv

Chall-Manager's invalid NetworkPolicy enables a malicious actor to pivot into another namespace

Priority MEDIUM 40CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-284.

Summary

Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. In versions prior to 0.6.5, due to a miswritten NetworkPolicy, a malicious actor can pivot from an instance to any Pod out of the origin namespace. This breaks the security-by-default property expected as part of the deployment program, leading to a potential lateral movement. In the specific case of sdk/kubernetes.Kompose it does not isolate the instances. This issue has been fixed in version 0.6.5.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00302 23rd percentileScored 2026-11-07
Fix Fixed chall-manager (ctfer-io): 0.6.5github.com/ctfer-io/chall-manager/deploy (Go): 0.6.5+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ctfer-iochall-managerbefore 0.6.50.6.5Patch availableCNA
—github.com/ctfer-io/chall-manager/deploy (Go)before 0.6.50.6.5Patch availableGHSA-mw24-f3xh-j3qv
—github.com/ctfer-io/chall-manager/sdk (Go)before 0.6.50.6.5Patch availableGHSA-mw24-f3xh-j3qv
  • chall-manager Vendorctfer-io Affected before 0.6.5 Fixed in 0.6.5 Patch available CNA
  • github.com/ctfer-io/chall-manager/deploy (Go) Vendor— Affected before 0.6.5 Fixed in 0.6.5 Patch available GHSA-mw24-f3xh-j3qv
  • github.com/ctfer-io/chall-manager/sdk (Go) Vendor— Affected before 0.6.5 Fixed in 0.6.5 Patch available GHSA-mw24-f3xh-j3qv

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ctfer-io:chall-manager:*:*:*:*:*:*:*:*before 0.6.5Vulnerablectfer-io
  • cpe:2.3:a:ctfer-io:chall-manager:*:*:*:*:*:*:*:* Versions before 0.6.5 Vulnerable ·ctfer-io

Remediation

  • Fix · CNA chall-manager (ctfer-io) Fixed in 0.6.5
  • Fix · GHSA-mw24-f3xh-j3qv github.com/ctfer-io/chall-manager/deploy (Go) Fixed in 0.6.5 Advisory →
  • Fix · GHSA-mw24-f3xh-j3qv github.com/ctfer-io/chall-manager/sdk (Go) Fixed in 0.6.5 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-32768
  2. 2026-10-03 Alias added: GHSA-mw24-f3xh-j3qv

References

Patch 1

Advisory 2

Other 2

  • TI-2025-33561 Chall-Manager's HTTP Gateway have no header check timeout leading to potential slow loris attacks CVSS 4.0HIGH 8.7
  • TI-2025-33560 Chall-Manager's scenario decoding process does not check for zip bombs CVSS 4.0HIGH 8.7
  • TI-2025-33559 Chall-Manager's scenario decoding process does not check for zip slips CVSS 4.0HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences