---
id: CVE-2026-84837
title: A flaw was found in rpm
summary: >-
  A flaw was found in rpm. An attacker can exploit a command injection
  vulnerability by influencing the path or filename of a tarball processed by
  `rpmbuild -t*` to include shell metacharacters. This is particularly relevant
  in automated b…
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: '2026-10-14T03:17:37.150'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84837'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:82378'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-84837'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2478408'
    label: secalert@redhat.com
tags:
  - nvd
epss: 0.01199
epssPercentile: 0.67366
ingestedAt: '2026-10-14T04:12:54.295Z'
---

## Overview

A flaw was found in rpm. An attacker can exploit a command injection vulnerability by influencing the path or filename of a tarball processed by `rpmbuild -t*` to include shell metacharacters. This is particularly relevant in automated build or continuous integration (CI) workflows that ingest externally supplied artifact names. Successful exploitation allows for arbitrary command execution with the privileges of the build user, which could lead to information disclosure or disruption of the build environment.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.