{"cve":"CVE-2026-61795","nvd":{"published":"2026-09-18T17:16:58.867","modified":"2026-09-24T21:25:27.050","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","score":6.8},"cwes":["CWE-697"],"references":["https://github.com/projectcapsule/capsule/commit/8d89d6865df6f41c7faa22fc9e807a57b01bfd0e","https://github.com/projectcapsule/capsule/pull/1983","https://github.com/projectcapsule/capsule/releases/tag/v0.13.7","https://github.com/projectcapsule/capsule/security/advisories/GHSA-f94q-w3w8-cj67"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:55:23.253742848+00:00"},"epss":{"cve":"CVE-2026-61795","score":0.00587,"percentile":0.48097,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-f94q-w3w8-cj67","url":"https://osv.dev/vulnerability/GHSA-f94q-w3w8-cj67","summary":"Capsule: hostnameRegexHandler.OnUpdate validates stale (old) Tenant regex, allowing invalid AllowedHostnames regex to bypass webhook validation","modified":"2026-09-28T17:11:18.134622420Z","packages":[{"ecosystem":"Go","name":"github.com/projectcapsule/capsule","purl":"pkg:golang/github.com/projectcapsule/capsule","ranges":[">=0.13.0 <0.13.7"],"fixed":["0.13.7"]}]},{"id":"GO-2026-6519","url":"https://osv.dev/vulnerability/GO-2026-6519","summary":"Capsule: hostnameRegexHandler.OnUpdate validates stale (old) Tenant regex, allowing invalid AllowedHostnames regex to bypass webhook validation in github.com/projectcapsule/capsule","modified":"2026-09-28T17:00:17.507459874Z","packages":[{"ecosystem":"Go","name":"github.com/projectcapsule/capsule","purl":"pkg:golang/github.com/projectcapsule/capsule","ranges":[">=0.13.0 <0.13.7"],"fixed":["0.13.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}