{"id":"CVE-2026-84233","aliases":["AZL-99369","BELL-CVE-2026-84233","DEBIAN-CVE-2026-84233","EUVD-2026-69249","GHSA-j9c4-6ppm-mvh4","RHSA-2026:66637","UBUNTU-CVE-2026-84233"],"status":"published","title":"Rpm: command execution via macro expansion in `rpmuncompress -x` for crafted `.gem` filenames","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.","severity":{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00194,"percentile":0.09136,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-78"],"published":"2026-09-01T14:53:45Z","modified":"2026-11-05T05:40:51Z","fixes":[{"ecosystem":"Alpaquita:23","package":"rpm","fixed_in":["4.18.0-r3"],"sources":["osv"]},{"ecosystem":"Alpaquita:25","package":"rpm","fixed_in":["4.19.1.1-r5"],"sources":["osv"]},{"ecosystem":"Alpaquita:stream","package":"rpm","fixed_in":["4.19.1.1-r7"],"sources":["osv"]},{"ecosystem":"Red Hat:hummingbird:1","package":"python3-rpm","fixed_in":["0:6.1.0-1.hum1"],"sources":["osv"]},{"ecosystem":"Red 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images"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:66637","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-84233","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2478409","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84233","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-j9c4-6ppm-mvh4"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-84233","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-84233","tags":["advisory"]},{"url":"https://images.redhat.com/","tags":["article"]},{"url":"https://access.redhat.com/security/updates/classification/","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_66637.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-84233","tags":["advisory","report"]},{"url":"https://ubuntu.com/security/CVE-2026-84233","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-84233","title":"Rpm: command execution via macro expansion in `rpmuncompress -x` for crafted `.gem` filenames","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.","status":"published","published":"2026-09-01T14:53:45.586Z","modified":"2026-11-06T01:05:47.372Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-06T02:55:55.947181Z"}],"euvd":[{"id":"EUVD-2026-69249","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.","status":"published","published":"2026-09-01T14:53:45Z","modified":"2026-11-06T01:05:47Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-06T02:02:53.341523Z"}],"ghsa":[{"id":"GHSA-j9c4-6ppm-mvh4","title":"A flaw was found in rpm. A local attacker could supply a specially crafted `.gem` filename...","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.","status":"published","published":"2026-09-01T15:31:15Z","modified":"2026-10-02T15:31:13Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:12:43.051947Z"}],"nvd":[{"id":"CVE-2026-84233","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.","status":"published","published":"2026-09-01T15:17:43.853Z","modified":"2026-11-06T01:17:55.517Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-06T06:59:05.303911Z"}],"osv":[{"id":"BELL-CVE-2026-84233","status":"published","published":"2026-09-04T06:05:08.164493Z","modified":"2026-10-10T07:15:06.585467352Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:26.341144Z"},{"id":"DEBIAN-CVE-2026-84233","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.","status":"published","published":"2026-09-01T15:17:43.853Z","modified":"2026-10-03T08:47:33.503329138Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:46:04.577397Z"},{"id":"RHSA-2026:66637","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-10-03T10:14:57Z","modified":"2026-10-03T10:32:34.15283765Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:22.406388Z"},{"id":"UBUNTU-CVE-2026-84233","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.","status":"published","published":"2026-09-01T15:17:00Z","modified":"2026-10-17T13:01:13.47921502Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:57:22.213888Z"},{"id":"AZL-99369","title":"CVE-2026-84233 affecting package rpm 4.18.2-2","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.","status":"published","published":"2026-09-01T15:17:43Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:26.480138Z"}]}}