{"api_version":"1","generated_at":"2026-10-01T10:27:32+00:00","cve":"CVE-2026-61794","urls":{"html":"https://cve.report/CVE-2026-61794","api":"https://cve.report/api/cve/CVE-2026-61794.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-61794","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-61794"},"summary":{"title":"Capsule: Malformed ForbiddenAnnotations.Regex can bypass Tenant validation and trigger namespace admission panic","description":"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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-09-18 17:16:58","updated_at":"2026-09-24 21:25:27"},"problem_types":["CWE-20","CWE-20 CWE-20: Improper Input Validation"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"6.8","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","baseScore":6.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"6.8","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","version":"3.1"}}],"references":[{"url":"https://github.com/projectcapsule/capsule/pull/1983","name":"https://github.com/projectcapsule/capsule/pull/1983","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/projectcapsule/capsule/releases/tag/v0.13.7","name":"https://github.com/projectcapsule/capsule/releases/tag/v0.13.7","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/projectcapsule/capsule/security/advisories/GHSA-gxjc-74v5-3vx3","name":"https://github.com/projectcapsule/capsule/security/advisories/GHSA-gxjc-74v5-3vx3","refsource":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/projectcapsule/capsule/commit/8d89d6865df6f41c7faa22fc9e807a57b01bfd0e","name":"https://github.com/projectcapsule/capsule/commit/8d89d6865df6f41c7faa22fc9e807a57b01bfd0e","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-61794","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61794","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"projectcapsule","product":"capsule","version":"affected >= 0.13.0, < 0.13.7","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"61794","cve":"CVE-2026-61794","epss":"0.005870000","percentile":"0.457940000","score_date":"2026-09-25","updated_at":"2026-09-26 00:06:19"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-61794","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-09-22T14:54:51.882379Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-09-22T14:55:27.246Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["exploit"],"url":"https://github.com/projectcapsule/capsule/security/advisories/GHSA-gxjc-74v5-3vx3"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"capsule","vendor":"projectcapsule","versions":[{"status":"affected","version":">= 0.13.0, < 0.13.7"}]}],"descriptions":[{"lang":"en","value":"Capsule is a multi-tenancy and policy-based framework for Kubernetes. 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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.","Type":"Description","Title":"Capsule: Malformed ForbiddenAnnotations.Regex can bypass Tenant "}]}}}