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Fencer Vulns
high 7.0

CVE-2026-44604 json

Rpm: command injection in rpmuncompress dountar() via unescaped archive top-level directory name in popen() shell command

published 2026-05-28 5 mo ago modified 2026-11-05 3 d ago also EUVD-2026-32726

cvss
7.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

A command injection vulnerability was discovered in the `rpmuncompress` utility of RPM. When extracting certain archive formats (ZIP, 7z, GEM) to a specified destination directory, the tool inserts the archive's top-level folder name into a shell command without properly sanitizing it. A specially crafted archive containing shell metacharacters in its folder name can execute arbitrary commands as the user running the extraction.

Patch / fix

  • Red Hat Red Hat Hardened Images 6.0.1-6.1.hum1
  • rpm hummingbird 1 6.0.1-6.1.hum1
  • rpm-cron hummingbird 1 6.0.1-6.1.hum1
  • rpm-libs hummingbird 1 6.0.1-6.1.hum1
  • rpm-sign hummingbird 1 6.0.1-6.1.hum1
  • rpm-build hummingbird 1 6.0.1-6.1.hum1
  • python3-rpm hummingbird 1 6.0.1-6.1.hum1
  • rpm-apidocs hummingbird 1 6.0.1-6.1.hum1
  • rpm-sign-libs hummingbird 1 6.0.1-6.1.hum1

red hat advisories RHSA-2026:28491

  • rpm SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 4.20.1-160000.3.1
  • python-rpm SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 4.20.1-160000.3.1
  • rpm-plugin-imaevmsign SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 4.20.1-160000.3.1

suse advisories SUSE-SU-2026:23787-1SUSE-SU-2026:23796-1

  • rpm openSUSE Leap 16.0 4.20.1-160000.3.1
  • python-rpm openSUSE Leap 16.0 4.20.1-160000.3.1
  • rpm-plugin-imaevmsign openSUSE Leap 16.0 4.20.1-160000.3.1
  • rpm openSUSE Tumbleweed 4.20.1-8.1

opensuse advisories openSUSE-SU-2026:21856-1openSUSE-SU-2026:11193-1

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-2026-44604 updated cvss 7.0

rpm: Command injection in rpmuncompress doUntar() via unescaped archive top-level directory name in popen() shell command

  • Red Hat Hardened Images rpm 6.0.1-6.1.hum1, rpm-cron 6.0.1-6.1.hum1, rpm-libs 6.0.1-6.1.hum1, rpm-sign 6.0.1-6.1.hum1, rpm-build 6.0.1-6.1.hum1, python3-rpm 6.0.1-6.1.hum1, +13 more
    fixed: vendor fix RHSA-2026:28491
  • Red Hat Enterprise Linux 6 rpm, rpm-cron, rpm-libs, rpm-build, rpm-python, rpm-apidocs 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
    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
5 mo ago

Exploit prediction

0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/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

Classification

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

References

Sources

Fencer Vulns 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.