CVE-2026-61795

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{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-61795", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-18T19:30:32.778857Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-18T19:30:33.794Z"}}], "cna": {"title": "Capsule: hostnameRegexHandler.OnUpdate validates stale (old) Tenant regex, allowing invalid AllowedHostnames regex to bypass webhook validation", "source": {"advisory": "GHSA-f94q-w3w8-cj67", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "projectcapsule", "product": "capsule", "versions": [{"status": "affected", "version": ">= 0.13.0, < 0.13.7"}]}], "references": [{"url": "https://github.com/projectcapsule/capsule/security/advisories/GHSA-f94q-w3w8-cj67", "name": "https://github.com/projectcapsule/capsule/security/advisories/GHSA-f94q-w3w8-cj67", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/projectcapsule/capsule/pull/1983", "name": "https://github.com/projectcapsule/capsule/pull/1983", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/projectcapsule/capsule/commit/8d89d6865df6f41c7faa22fc9e807a57b01bfd0e", "name": "https://github.com/projectcapsule/capsule/commit/8d89d6865df6f41c7faa22fc9e807a57b01bfd0e", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/projectcapsule/capsule/releases/tag/v0.13.7", "name": "https://github.com/projectcapsule/capsule/releases/tag/v0.13.7", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-697", "description": "CWE-697: Incorrect Comparison"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-18T16:31:42.182Z"}}}, "cveMetadata": {"cveId": "CVE-2026-61795", "state": "PUBLISHED", "dateUpdated": "2026-09-21T20:49:59.055Z", "dateReserved": "2026-07-10T20:06:05.617Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-09-18T16:31:42.182Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "capsule", "vendor": "projectcapsule", "versions": [{"status": "affected", "version": ">= 0.13.0, < 0.13.7"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-61795", "lastModified": "2026-09-24T21:25:27.050", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.3, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-61795", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-18T19:30:32.778857Z", "version": "2.0.3"}}]}, "published": "2026-09-18T17:16:58.867", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/projectcapsule/capsule/commit/8d89d6865df6f41c7faa22fc9e807a57b01bfd0e"}, {"source": "security-advisories@github.com", "url": "https://github.com/projectcapsule/capsule/pull/1983"}, {"source": "security-advisories@github.com", "url": "https://github.com/projectcapsule/capsule/releases/tag/v0.13.7"}, {"source": "security-advisories@github.com", "url": "https://github.com/projectcapsule/capsule/security/advisories/GHSA-f94q-w3w8-cj67"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-697"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.13.0,0.13.7)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "capsule", "source": "cna", "vendor": "projectcapsule"}, "product": "capsule", "vendor": "projectcapsule"}], "created": "2026-09-20T04:30:17.870513+00:00", "updated": "2026-09-20T04:30:17.870546+00:00", "vendors": ["projectcapsule", "projectcapsule$PRODUCT$capsule"]}