CVE-2026-95521 vulnerability in Red Hat Products
Published on September 24, 2026
Rpm: rpm: shell command injection via macro expansion of source/spec file basenames when installing a source rpm
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.
Vulnerability Analysis
CVE-2026-95521 can be exploited with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Timeline
Reported to Red Hat.
Made public. 6 days later.
Weakness Type
What is a Shell injection Vulnerability?
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
CVE-2026-95521 has been classified to as a Shell injection vulnerability or weakness.
Products Associated with CVE-2026-95521
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