{"id":"CVE-2026-6388","aliases":["EUVD-2026-23126","GHSA-mx9c-q7m4-fm97"],"status":"published","title":"Argocd-image-updater: argocd image updater: cross-namespace privilege escalation via insufficient namespace validation","description":"A flaw was found in ArgoCD Image Updater. This vulnerability allows an attacker, with permissions to create or modify an ImageUpdater resource in a multi-tenant environment, to bypass namespace boundaries. By exploiting insufficient validation, the attacker can trigger unauthorized image updates on applications managed by other tenants. This leads to cross-namespace privilege escalation, impacting application integrity through unauthorized application updates.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00357,"percentile":0.29675,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1220"],"published":"2026-04-15T21:34:07Z","modified":"2026-10-26T22:10:00Z","products":[{"vendor":"red hat","product":"red hat openshift gitops"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-6388","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2458766","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6388.json","tags":["x_sadp-csaf-vex"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6388"},{"url":"https://github.com/advisories/GHSA-mx9c-q7m4-fm97"}],"sources":{"cve":[{"id":"CVE-2026-6388","title":"Argocd-image-updater: argocd image updater: cross-namespace privilege escalation via insufficient namespace validation","description":"A flaw was found in ArgoCD Image Updater. This vulnerability allows an attacker, with permissions to create or modify an ImageUpdater resource in a multi-tenant environment, to bypass namespace boundaries. By exploiting insufficient validation, the attacker can trigger unauthorized image updates on applications managed by other tenants. This leads to cross-namespace privilege escalation, impacting application integrity through unauthorized application updates.","status":"published","published":"2026-04-15T21:34:07.022Z","modified":"2026-07-15T00:41:29.043Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L","level":"critical","assessor":"cna"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L","level":"critical","assessor":"adp"}],"cwes":["CWE-1220","CWE-1220"],"updated_at":"2026-11-02T13:49:53.818886Z"}],"euvd":[{"id":"EUVD-2026-23126","description":"A flaw was found in ArgoCD Image Updater. This vulnerability allows an attacker, with permissions to create or modify an ImageUpdater resource in a multi-tenant environment, to bypass namespace boundaries. By exploiting insufficient validation, the attacker can trigger unauthorized image updates on applications managed by other tenants. This leads to cross-namespace privilege escalation, impacting application integrity through unauthorized application updates.","status":"published","published":"2026-04-15T21:34:07Z","modified":"2026-07-15T00:41:29Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L","level":"critical"}],"updated_at":"2026-11-02T18:19:56.918546Z"}],"ghsa":[{"id":"GHSA-mx9c-q7m4-fm97","title":"A flaw was found in ArgoCD Image Updater. This vulnerability allows an attacker, with permissions...","description":"A flaw was found in ArgoCD Image Updater. This vulnerability allows an attacker, with permissions to create or modify an ImageUpdater resource in a multi-tenant environment, to bypass namespace boundaries. By exploiting insufficient validation, the attacker can trigger unauthorized image updates on applications managed by other tenants. This leads to cross-namespace privilege escalation, impacting application integrity through unauthorized application updates.","status":"published","published":"2026-04-16T00:54:04Z","modified":"2026-06-30T03:37:24Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L","level":"critical"}],"cwes":["CWE-1220"],"updated_at":"2026-11-02T15:09:05.934873Z"}],"nvd":[{"id":"CVE-2026-6388","description":"A flaw was found in ArgoCD Image Updater. This vulnerability allows an attacker, with permissions to create or modify an ImageUpdater resource in a multi-tenant environment, to bypass namespace boundaries. By exploiting insufficient validation, the attacker can trigger unauthorized image updates on applications managed by other tenants. This leads to cross-namespace privilege escalation, impacting application integrity through unauthorized application updates.","status":"published","published":"2026-04-15T22:17:22.583Z","modified":"2026-10-26T22:10:00.163Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L","level":"critical","assessor":"secondary"}],"cwes":["CWE-1220"],"updated_at":"2026-11-02T14:12:14.748836Z"}]}}