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HIGH

CVE-2026-84837

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

CVSS v3

7.8

HIGH

EPSS Score

1.3 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

none

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2026-84837 Red Hat Product Security61 products fixed · 69 known affected

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

    python3-rpm as a component of Red Hat Enterprise Linux 10 · rpm-apidocs as a component of Red Hat Enterprise Linux 10 · rpm-build as a component of Red Hat Enterprise Linux 10

  • RHSA-2026:82378 Red Hat Product Security61 products fixed

    Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2026-09-02
Last Modified
2026-09-02

Frequently asked questions

What is CVE-2026-84837?

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.

Is CVE-2026-84837 actively exploited?

Active exploitation of CVE-2026-84837 has not been confirmed. Its EPSS score was 1.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-84837?

CVE-2026-84837 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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