Rpm: rpm: shell command injection via macro expansion of source/spec file basenames when installing a source rpm (CVE-2026-95521) | HOL Guard CVE

High · CVSS 7.8CVE-2026-95521

Rpm: rpm: shell command injection via macro expansion of source/spec file basenames when installing a source rpm

Answer in brief

CVE-2026-95521 records a High severity (CVSS 7.8) vulnerability in Rpm: rpm: shell command injection via macro expansion of source/spec file basenames when installing a source rpm. The current sources do not mark it as known exploited. The current feed maps Red Hat/rpm (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 24, 2026Updated Sep 24, 2026Source checked Sep 24, 2026First seen by HOL Sep 24, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/rpm (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Red Hat/rpmgeneric	*	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Red Hat/rpm.
Review the reported fix. Source-reported workaround: To mitigate this issue, Red Hat recommends avoiding the installing or rebuilding of source RPMs from untrusted or unverified sources.

Evidence timeline and material changes

Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 24, 2026

Sources and claim methodology

Upstream source description

A command injection flaw was found in rpm. Installing or rebuilding a source RPM whose source or spec file basenames contain a %() macro construct causes rpm to execute an attacker-controlled shell command via popen() while relocating the source file list. This allows arbitrary command execution as the invoking (typically non-root) user, simply by installing, rebuilding, or otherwise processing an untrusted .src.rpm.

Quoted source text, attributed separately from HOL analysis.