CVE-2026-32768
criticalpriority · track · 40EPSS 0.003 · 22 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5–9.9
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
- Go github.com/ctfer-io/chall-manager/deploy< 0.6.5osvUSpkg:golang/github.com/ctfer-io/chall-manager/deploy
- Go github.com/ctfer-io/chall-manager/sdk< 0.6.5osvUSpkg:golang/github.com/ctfer-io/chall-manager/sdk
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-mw24-f3xh-j3qvChall-Manager's invalid NetworkPolicy enables a malicious actor to pivot into another namespace2026-03-16ghsa · osvUS
### Impact Due to a mis-written 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. ### Patch Removing the `inter-ns` NetworkPolicy patches the vulnerability. If updates are not possible in production environments, we recommend to manually delete it and update as soon as possible. ### Workaround Given your context, delete the failing network policy that should be prefixed by `inter-ns-` in the target namespace. You can use the following to delete all matching network policy. If unsure of the outcome, please do it manually. ```bash for ns in $(kubectl get ns -o jsonpath='{.items[*].metadata.name}' | tr ' ' '\n' | grep '^cm-target-'); do kubectl -n "$ns" get networkpolicy -o name \ | grep '^networkpolicy.networking.k8s.io/inter-ns-' \ | xargs -r kubectl -n "$ns" delete done ```
- GO-2026-4718Chall-Manager's invalid NetworkPolicy enables a malicious actor to pivot into another namespace in github.com/ctfer-io/chall-manager/deploy2026-03-26vendor · osvUS
Chall-Manager's invalid NetworkPolicy enables a malicious actor to pivot into another namespace in github.com/ctfer-io/chall-manager/deploy
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://github.com/ctfer-io/chall-manager/commit/dc5ef27dfed2befef7f506ab8ca14d062b0d79c5cnnvd
- https://github.com/ctfer-io/chall-manager/releasesPatchcnnvd
- https://github.com/ctfer-io/chall-manager/releases/tag/v0.6.5cnnvd
- https://github.com/ctfer-io/chall-manager/security/advisories/GHSA-mw24-f3xh-j3qvcnnvd
- https://github.com/ctfer-io/chall-manager/commit/dc5ef27dfed2befef7f506ab8ca14d062b0d79c5enisa_euvd
- https://github.com/ctfer-io/chall-manager/releases/tag/v0.6.5enisa_euvd
- https://github.com/ctfer-io/chall-manager/security/advisories/GHSA-mw24-f3xh-j3qvenisa_euvd
- https://github.com/ctfer-io/chall-manager/commit/dc5ef27dfed2befef7f506ab8ca14d062b0d79c5Patchnvd
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