CVE-2026-84837CWE-78command-injection

CVE-2026-84837

High · published September 2, 2026

CVSS v3.1
7.8
EPSS
1%
Percentile
70.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01303 · 70.3th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-09-02T20:17Z
References (3)
EPSS history
Timeline
  • 04 SEP 03:44Z
    EPSS moved — → 1%
    epss
  • 02 SEP 15:12Z
    Rpm: command injection in `rpmbuild -t*` (`gettarspec`) via unescaped tarball path
    cvelistv5