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VULNERABILITIES

CVE-2026-78367 Details

Description

A vulnerability was found in RPM's rpmbuild tarball processing. When processing a crafted source archive, the getTarSpec() function in tools/rpmbuild.cc passes an attacker-controlled tar archive member name to rpmExpand() as part of a %{basename:...} macro expression. A specially crafted .spec member name can therefore inject RPM macros, including Lua expressions, resulting in arbitrary code execution with the privileges of the user running rpmbuild. This can be exploited when a victim or automated build system processes an attacker-controlled source tarball using rpmbuild tarball mode (such as -ts, -ta, or -tb).

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/rpm-software-management/rpm/issues/4314 CISA-ADP
https://access.redhat.com/security/cve/CVE-2026-78367 [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2521857 [email protected]
https://github.com/rpm-software-management/rpm/issues/4314 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-94Improper Control of Generation of Code ('Code Injection')[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-78367
NVD Published Date:
Aug 24, 2026
NVD Last Modified:
Sep 4, 2026
Source:
[email protected]
CVE-2026-78367 Details - Not Deferred