{"id":"CVE-2026-100707","aliases":["BIT-kyverno-2026-100707","EUVD-2026-87680","GHSA-66wc-m66q-pf76","GHSA-c5qq-7g2q-cpqp"],"status":"published","title":"Kyverno before 1.19.1 Namespace Isolation Bypass via Percent-Encoded Path","description":"Kyverno before 1.19.1 contains a namespace isolation bypass in the apiCall context entry of namespaced Policy resources due to inconsistent path interpretation between validation and execution. A low-privilege tenant can use percent-encoded dot-segments in urlPath to bypass namespace checks and read resources from other namespaces using the Kyverno admission controller's ServiceAccount credentials.","severity":{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0046,"percentile":0.40229,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2026-09-26T13:24:01Z","modified":"2026-10-28T02:31:05Z","fixes":[{"ecosystem":"Bitnami","package":"kyverno","fixed_in":["1.19.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"kyverno","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.19.1"}]}]}],"products":[{"vendor":"kyverno","product":"kyverno"}],"references":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-c5qq-7g2q-cpqp","tags":["vendor-advisory","web","advisory"]},{"url":"https://www.vulncheck.com/advisories/kyverno-before-1.19.1-namespace-isolation-bypass-via-percent-encoded-path","tags":["third-party-advisory","web","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100707","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-66wc-m66q-pf76"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100707.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-100707","title":"Kyverno before 1.19.1 Namespace Isolation Bypass via Percent-Encoded Path","description":"Kyverno before 1.19.1 contains a namespace isolation bypass in the apiCall context entry of namespaced Policy resources due to inconsistent path interpretation between validation and execution. A low-privilege tenant can use percent-encoded dot-segments in urlPath to bypass namespace checks and read resources from other namespaces using the Kyverno admission controller's ServiceAccount credentials.","status":"published","published":"2026-09-26T13:24:01.414Z","modified":"2026-09-28T17:41:14.708Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","level":"high","assessor":"cna"},{"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-22"],"updated_at":"2026-11-02T14:20:06.562031Z"}],"euvd":[{"id":"EUVD-2026-87680","description":"Kyverno before 1.19.1 contains a namespace isolation bypass in the apiCall context entry of namespaced Policy resources due to inconsistent path interpretation between validation and execution. A low-privilege tenant can use percent-encoded dot-segments in urlPath to bypass namespace checks and read resources from other namespaces using the Kyverno admission controller's ServiceAccount credentials.","status":"published","published":"2026-09-26T13:24:01Z","modified":"2026-09-28T17:41:14Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T17:27:53.091489Z"}],"ghsa":[{"id":"GHSA-66wc-m66q-pf76","title":"Kyverno before 1.19.1 contains a namespace isolation bypass in the apiCall context entry of...","description":"Kyverno before 1.19.1 contains a namespace isolation bypass in the apiCall context entry of namespaced Policy resources due to inconsistent path interpretation between validation and execution. A low-privilege tenant can use percent-encoded dot-segments in urlPath to bypass namespace checks and read resources from other namespaces using the Kyverno admission controller's ServiceAccount credentials.","status":"published","published":"2026-09-26T15:31:23Z","modified":"2026-09-26T15:31:28Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"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-22"],"updated_at":"2026-11-02T15:12:30.689958Z"}],"nvd":[{"id":"CVE-2026-100707","description":"Kyverno before 1.19.1 contains a namespace isolation bypass in the apiCall context entry of namespaced Policy resources due to inconsistent path interpretation between validation and execution. A low-privilege tenant can use percent-encoded dot-segments in urlPath to bypass namespace checks and read resources from other namespaces using the Kyverno admission controller's ServiceAccount credentials.","status":"published","published":"2026-09-26T14:16:55.983Z","modified":"2026-09-28T18:17:16.03Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"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-22"],"updated_at":"2026-11-02T14:12:52.081323Z"}],"osv":[{"id":"CVE-2026-100707","title":"Kyverno before 1.19.1 Namespace Isolation Bypass via Percent-Encoded Path","description":"Kyverno before 1.19.1 contains a namespace isolation bypass in the apiCall context entry of namespaced Policy resources due to inconsistent path interpretation between validation and execution. A low-privilege tenant can use percent-encoded dot-segments in urlPath to bypass namespace checks and read resources from other namespaces using the Kyverno admission controller's ServiceAccount credentials.","status":"published","published":"2026-09-26T13:24:01.414Z","modified":"2026-10-28T02:31:05.399768284Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:44:53.83521Z"},{"id":"BIT-kyverno-2026-100707","title":"Kyverno before 1.19.1 Namespace Isolation Bypass via Percent-Encoded Path","description":"Kyverno before 1.19.1 contains a namespace isolation bypass in the apiCall context entry of namespaced Policy resources due to inconsistent path interpretation between validation and execution. A low-privilege tenant can use percent-encoded dot-segments in urlPath to bypass namespace checks and read resources from other namespaces using the Kyverno admission controller's ServiceAccount credentials.","status":"published","published":"2026-10-01T09:26:28.672Z","modified":"2026-10-01T10:11:14.485214765Z","updated_at":"2026-11-02T15:28:32.162822Z"}]}}