{"id":"CVE-2026-84838","title":"A flaw was found in rpmuncompress","summary":"A flaw was found in rpmuncompress. This command injection vulnerability allows a local attacker to execute arbitrary commands. This occurs when rpmuncompress processes a specially crafted archive filename containing shell metacharacters,…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-78"],"published":"2026-09-02","updated":"2026-10-14","sourceUpdated":"2026-10-14T03:17:37.330","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84838","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:82378","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-84838","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462222","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84838.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-84838"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84838"}],"tags":["nvd","csaf","vex","red-hat","cve.org"],"epss":0.01105,"epssPercentile":0.65628,"ingestedAt":"2026-10-14T04:12:54.295Z","vendor":"Red Hat","product":"Red Hat Hardened Images","affected":["enterprise_linux 10","hardened_images"],"patched":["hardened_images"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-02T16:06:32.308594Z"},"slug":"CVE-2026-84838","body":"## Overview\n\nA flaw was found in rpmuncompress. This command injection vulnerability allows a local attacker to execute arbitrary commands. This occurs when rpmuncompress processes a specially crafted archive filename containing shell metacharacters, which are not properly escaped before being passed to shell command strings. Successful exploitation requires user interaction, where a user or automated workflow invokes rpmuncompress on the malicious file, leading to high impact on the confidentiality, integrity, and availability of data accessible to the invoking user.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:82378** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-13 · [advisory](https://access.redhat.com/errata/RHSA-2026:82378)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84838.json)","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}