CVE-2026-61794
mediumCapsule is a multi-tenancy and policy-based framework for Kubernetes.
Capsule is a multi-tenancy and policy-based framework for Kubernetes. From 0.13.0 until 0.13.7, the Tenant update validation in internal/webhook/tenant/validation/forbidden_annotations_regex.go compiles ForbiddenLabels.Regex for both the labels and annotations checks instead of validating ForbiddenAnnotations.Regex. An administrator who can update a Tenant can therefore persist a malformed ForbiddenAnnotations.Regex while leaving the labels expression valid. Namespace creation or update later passes the stored expression through pkg/api/forbidden_list.go, where regexp.MustCompile can panic during forbidden metadata validation and deny namespace operations for the affected tenant. This issue is fixed in version 0.13.7.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/projectcapsule/capsule/commit/8d89d6865df6f41c7faa22fc9e807a57b01bfd0e security-advisories@github.com
- https://github.com/projectcapsule/capsule/pull/1983 security-advisories@github.com
- https://github.com/projectcapsule/capsule/releases/tag/v0.13.7 security-advisories@github.com
- https://github.com/projectcapsule/capsule/security/advisories/GHSA-gxjc-74v5-3vx3 security-advisories@github.com
- https://github.com/projectcapsule/capsule/security/advisories/GHSA-gxjc-74v5-3vx3 134c704f-9b21-4f2e-91b3-4a467353bcc0