{"id":"EUVD-2026-83166","enisaUuid":"dfb6e4ea-fa90-3379-9df6-8bae2b66127d","description":"Capsule is a multi-tenancy and policy-based framework for Kubernetes. From 0.13.0 until 0.13.7, hostnameRegexHandler.OnUpdate in internal/webhook/tenant/validation/hostname_regex.go reverses the new and old Tenant parameters and validates the previous AllowedHostnames.Regex instead of the submitted value. A cluster administrator can therefore store a malformed AllowedHostnames.Regex after the webhook accepts the update based on stale valid state. Subsequent Ingress creation or update reaches validate_hostnames.go, which evaluates the malformed pattern, ignores the regular-expression error, and treats every hostname as unmatched, blocking Ingress operations for the affected tenant until an administrator repairs the Tenant configuration. This issue is fixed in version 0.13.7.","datePublished":"Sep 18, 2026, 4:31:42 PM","dateUpdated":"Sep 21, 2026, 8:49:59 PM","baseScore":6.8,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","references":"https://github.com/projectcapsule/capsule/security/advisories/GHSA-f94q-w3w8-cj67\nhttps://github.com/projectcapsule/capsule/pull/1983\nhttps://github.com/projectcapsule/capsule/commit/8d89d6865df6f41c7faa22fc9e807a57b01bfd0e\nhttps://github.com/projectcapsule/capsule/releases/tag/v0.13.7\n","aliases":"CVE-2026-61795\nGHSA-f94q-w3w8-cj67\n","assigner":"GitHub_M","epss":0.59,"enisaIdProduct":[{"id":"3d67ee0b-da09-3fe5-ac4b-65cdf6b7ae45","product":{"name":"capsule","vendor":{"name":"projectcapsule"}},"product_version":"0.13.0, \u003c 0.13.7"}],"enisaIdVendor":[{"id":"29691c8a-798a-3181-afc7-c0ec2c6752dc","vendor":{"name":"projectcapsule"}}],"enisaIdVulnerability":[{"id":"3659df07-adcb-3c23-ae36-15a22f65d50a","vulnerability":{"id":"CVE-2026-61795","description":"Capsule is a multi-tenancy and policy-based framework for Kubernetes. From 0.13.0 until 0.13.7, hostnameRegexHandler.OnUpdate in internal/webhook/tenant/validation/hostname_regex.go reverses the new and old Tenant parameters and validates the previous AllowedHostnames.Regex instead of the submitted value. A cluster administrator can therefore store a malformed AllowedHostnames.Regex after the webhook accepts the update based on stale valid state. Subsequent Ingress creation or update reaches validate_hostnames.go, which evaluates the malformed pattern, ignores the regular-expression error, and treats every hostname as unmatched, blocking Ingress operations for the affected tenant until an administrator repairs the Tenant configuration. This issue is fixed in version 0.13.7.","datePublished":"Sep 18, 2026, 4:31:42 PM","dateUpdated":"Sep 21, 2026, 8:49:59 PM","status":"PUBLISHED","baseScore":6.8,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","references":"https://github.com/projectcapsule/capsule/security/advisories/GHSA-f94q-w3w8-cj67\nhttps://github.com/projectcapsule/capsule/pull/1983\nhttps://github.com/projectcapsule/capsule/commit/8d89d6865df6f41c7faa22fc9e807a57b01bfd0e\nhttps://github.com/projectcapsule/capsule/releases/tag/v0.13.7\n","enisa_id":"EUVD-2026-83166\n","assigner":"GitHub_M","epss":0.59,"dataProcessed":"Nov 11, 2026, 7:20:09 AM","vulnerabilityProduct":[{"id":"0f518185-43e1-3c3c-8923-6a196eed28dd","product":{"name":"capsule","vendor":{"name":"projectcapsule"}},"product_version":"0.13.0, \u003c 0.13.7"}],"vulnerabilityVendor":[{"id":"fb101191-139a-303b-b5a9-d3c6da4056f0","vendor":{"name":"projectcapsule"}}]}},{"id":"9e7984ae-5df3-3006-adc7-04c3212a95ed","vulnerability":{"id":"GHSA-f94q-w3w8-cj67","description":"Capsule: hostnameRegexHandler.OnUpdate validates stale (old) Tenant regex, allowing invalid AllowedHostnames regex to bypass webhook validation","datePublished":"Sep 18, 2026, 5:14:43 PM","dateUpdated":"Sep 18, 2026, 5:14:43 PM","baseScore":0.0,"references":"https://github.com/projectcapsule/capsule/security/advisories/GHSA-f94q-w3w8-cj67\nhttps://github.com/projectcapsule/capsule/pull/1983\nhttps://github.com/projectcapsule/capsule/commit/8d89d6865df6f41c7faa22fc9e807a57b01bfd0e\nhttps://github.com/projectcapsule/capsule\nhttps://github.com/projectcapsule/capsule/releases/tag/v0.13.7\n","enisa_id":"EUVD-2026-83166\n","aliases":"GHSA-f94q-w3w8-cj67\nCVE-2026-61795\n","epss":0.0,"dataProcessed":"Nov 9, 2026, 3:53:48 PM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[]}