{"id":"CVE-2026-121621","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-121621","summary":"A command injection vulnerability was found in Argo CD Image Updater, where a proxy URL configured on an SSH Git repository is passed unsanitized into a shell-interpreted SSH command.…","details":"A command injection vulnerability was found in Argo CD Image Updater, where a proxy URL configured on an SSH Git repository is passed unsanitized into a shell-interpreted SSH command. An attacker able to set a malicious proxy value can inject shell metacharacters to execute arbitrary commands and access credentials in the context of the Image Updater process.","published":"2026-11-03T21:17:37.857","modified":"2026-11-04T20:19:10.850","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/argoproj-labs/argocd-image-updater/pull/1905","label":"argoproj-labs/argocd-image-updater#1905"},"references":[{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-121621"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2565914"},{"type":"WEB","url":"https://github.com/argoproj-labs/argocd-image-updater/pull/1905"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-11-04T20:19:10.850"}}