Macro Injection Vulnerability in rpmbuild Affects Red Hat Products
CVE-2026-78367

7HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
24 August 2026

What is CVE-2026-78367?

A flaw has been identified in rpmbuild that exposes systems to remote code execution risks. When processing specially crafted tarballs in tarball mode, a maliciously designed tar member name can lead to macro injection. This vulnerability allows attackers to manipulate users into building these harmful tarballs, resulting in the execution of arbitrary code on the system. It underscores the importance of verifying the integrity of tarball contents before processing them to mitigate security threats.

References

https://access.redhat.com/security/cve/CVE-2026-78367
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2521857
issue-trackingx_refsource_REDHAT
https://github.com/rpm-software-management/rpm/issues/4314

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank SANDIPAN ROY (RED HAT) for reporting this issue.
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