{"id":"CVE-2026-66878","aliases":["EUVD-2026-57059","GHSA-37c6-v768-8x6w"],"status":"published","title":"Multicloud-operators-subscription: multicloud-operators-subscription: fetchchannelreferences honours channel.spec.secretref.namespace enabling cross-namespace secret exfiltration","description":"A flaw was found in multicloud-operators-subscription. A privileged user, specifically a namespace administrator capable of creating Channel and Subscription resources, can exploit this vulnerability. By manipulating the Channel.Spec.SecretRef.Namespace field, the user can cause the system to copy sensitive Secret contents from other namespaces into their own, leading to information disclosure.","severity":{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00483,"percentile":0.41981,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-08-12T01:10:38Z","modified":"2026-10-24T16:10:00Z","products":[{"vendor":"red hat","product":"red hat advanced cluster management for kubernetes 2.11"},{"vendor":"red hat","product":"red hat advanced cluster management for kubernetes 2.13"},{"vendor":"red hat","product":"red hat advanced cluster management for kubernetes 2.14"},{"vendor":"red hat","product":"red hat advanced cluster management for kubernetes 2.15"},{"vendor":"red hat","product":"red hat advanced cluster management for kubernetes 2.16"},{"vendor":"red hat","product":"red hat advanced cluster management for kubernetes 2.17"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:60386","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:60387","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:60388","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:60389","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:60390","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:60391","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-66878","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2514226","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66878"},{"url":"https://github.com/advisories/GHSA-37c6-v768-8x6w"}],"sources":{"cve":[{"id":"CVE-2026-66878","title":"Multicloud-operators-subscription: multicloud-operators-subscription: fetchchannelreferences honours channel.spec.secretref.namespace enabling cross-namespace secret exfiltration","description":"A flaw was found in multicloud-operators-subscription. A privileged user, specifically a namespace administrator capable of creating Channel and Subscription resources, can exploit this vulnerability. By manipulating the Channel.Spec.SecretRef.Namespace field, the user can cause the system to copy sensitive Secret contents from other namespaces into their own, leading to information disclosure.","status":"published","published":"2026-08-12T01:10:38.957Z","modified":"2026-09-05T14:23:45.964Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:20:12.939084Z"}],"euvd":[{"id":"EUVD-2026-57059","description":"A flaw was found in multicloud-operators-subscription. A privileged user, specifically a namespace administrator capable of creating Channel and Subscription resources, can exploit this vulnerability. By manipulating the Channel.Spec.SecretRef.Namespace field, the user can cause the system to copy sensitive Secret contents from other namespaces into their own, leading to information disclosure.","status":"published","published":"2026-08-12T01:10:38Z","modified":"2026-09-05T14:23:45Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T18:01:10.613767Z"}],"ghsa":[{"id":"GHSA-37c6-v768-8x6w","title":"A flaw was found in multicloud-operators-subscription. A privileged user, specifically a...","description":"A flaw was found in multicloud-operators-subscription. A privileged user, specifically a namespace administrator capable of creating Channel and Subscription resources, can exploit this vulnerability. By manipulating the Channel.Spec.SecretRef.Namespace field, the user can cause the system to copy sensitive Secret contents from other namespaces into their own, leading to information disclosure.","status":"published","published":"2026-08-12T03:31:17Z","modified":"2026-08-27T06:31:23Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:11:02.000078Z"}],"nvd":[{"id":"CVE-2026-66878","description":"A flaw was found in multicloud-operators-subscription. A privileged user, specifically a namespace administrator capable of creating Channel and Subscription resources, can exploit this vulnerability. By manipulating the Channel.Spec.SecretRef.Namespace field, the user can cause the system to copy sensitive Secret contents from other namespaces into their own, leading to information disclosure.","status":"published","published":"2026-08-12T02:16:37.937Z","modified":"2026-10-24T16:10:00.153Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:36.880938Z"}]}}