Skip to content
Fencer Intel
high 7.8

CVE-2026-84837 json

Rpm: command injection in `rpmbuild -t*` (`gettarspec`) via unescaped tarball path

published 2mo ago modified 5d ago also EUVD-2026-70108

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

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 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.

Patch / fix

  • Red Hat Red Hat Hardened Images 6.1.0-1.3.hum1
  • rpm hummingbird 1 6.1.0-1.3.hum1
  • rpm-cron hummingbird 1 6.1.0-1.3.hum1
  • rpm-libs hummingbird 1 6.1.0-1.3.hum1
  • rpm-sign hummingbird 1 6.1.0-1.3.hum1
  • rpm-build hummingbird 1 6.1.0-1.3.hum1
  • python3-rpm hummingbird 1 6.1.0-1.3.hum1
  • rpm-apidocs hummingbird 1 6.1.0-1.3.hum1
  • rpm-sign-libs hummingbird 1 6.1.0-1.3.hum1

red hat advisories RHSA-2026:82378

Is CVE-2026-84837 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-84837 updated cvss 7.8

rpm: Command Injection in `rpmbuild -t*` (`getTarSpec`) via Unescaped Tarball Path

  • Red Hat Enterprise Linux 6 rpm, rpm-cron, rpm-libs, rpm-build, rpm-python, rpm-apidocs
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 rpm, rpm-cron, rpm-libs, rpm-sign, rpm-build, rpm-python, +3 more Red Hat Enterprise Linux 8 rpm, rpm-cron, rpm-libs, rpm-sign, rpm-build, python3-rpm, +8 more Red Hat Enterprise Linux 9 rpm, rpm-cron, rpm-libs, rpm-sign, rpm-build, python3-rpm, +9 more Red Hat Enterprise Linux 10 rpm
    affected: workaround, no fix available
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-core-bff-rhel9, rhoai/odh-dashboard-rhel9, rhoai/odh-mod-arch-maas-rhel9, rhoai/odh-mod-arch-automl-rhel9, rhoai/odh-mod-arch-gen-ai-rhel9, rhoai/odh-mod-arch-mlflow-rhel9, +6 more
    under investigation
  • Red Hat Hardened Images rpm 6.1.0-1.3.hum1, rpm-cron 6.1.0-1.3.hum1, rpm-libs 6.1.0-1.3.hum1, rpm-sign 6.1.0-1.3.hum1, rpm-build 6.1.0-1.3.hum1, python3-rpm 6.1.0-1.3.hum1, +13 more
    fixed: vendor fix RHSA-2026:82378
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-mlflow-rhel9, rhoai/odh-kube-rbac-proxy-rhel9, rhoai/odh-maas-controller-rhel9, rhoai/odh-mlflow-operator-rhel9, rhoai/odh-model-controller-rhel9, rhoai/odh-ogx-k8s-operator-rhel9, +14 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2mo ago

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Red Hat Red Hat Hardened Images
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat OpenShift AI (RHOAI)

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.