{"affected":[{"defaultStatus":"affected","ecosystem":"https://catalog.redhat.com/software/containers/","packageName":"rpm-main","product":"Red Hat Hardened Images","source":"CNA: redhat","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"6.1.0-1.hum1","versionType":"rpm"}]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rpm","product":"Red Hat Enterprise Linux 10","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rpm","product":"Red Hat Enterprise Linux 6","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rpm","product":"Red Hat Enterprise Linux 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rpm","product":"Red Hat Enterprise Linux 8","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rpm","product":"Red Hat Enterprise Linux 9","source":"CNA: redhat","vendor":"Red Hat","versions":[]}],"cveId":"CVE-2026-84233","cwes":["CWE-78"],"description":"A flaw was found in rpm. A local attacker could supply a specially crafted `.gem` filename containing RPM macro syntax. When a user or automated workflow invokes `rpmuncompress -x` on this file, the macro expansion occurs during command construction. This allows the attacker to execute arbitrary commands with the privileges of the invoking account, leading to a compromise of confidentiality, integrity, and availability.","epss":{"date":"2026-11-02","percentile":0.09119,"score":0.00194},"exploits":[],"kev":null,"metrics":[{"score":7,"severity":"high","source":"CNA: redhat","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793688663158,"publishedAt":1788274425586,"references":[{"source":"CNA: redhat","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:66637"},{"source":"CNA: redhat","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-84233"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2478409"}],"remediation":[{"kind":"workaround","source":"CNA: redhat","text":"To mitigate this vulnerability, avoid using `rpmuncompress -x` (or a build workflow that invokes it via %{__rpmuncompress}) on `.gem` files from untrusted sources. Before extraction, rename `.gem` files to remove any RPM macro syntax (e.g., `%(...)`) or utilize an alternative extraction tool that does not expand RPM macros in filenames. In automated environments, implement validation to reject or sanitize untrusted archive names prior to processing"}],"revision":"0ac72f7803d70f13c07d8205aa824a732cff29124b41be8bf366e688f9e0b63d","sources":[{"modifiedAt":1793688663158,"name":"CNA: redhat","retrievedAt":1793689780098,"url":"https://www.cve.org/CVERecord?id=CVE-2026-84233"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793689784629,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-84233"}],"ssvc":{"assessedAt":1788487192859,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Rpm: command execution via macro expansion in `rpmuncompress -x` for crafted `.gem` filenames","updatedAt":1793689784629}