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CVE-2026-95521— Rpm: rpm: shell command injection via macro expansion of source/spec file basenames when installing a source rpm

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

发现 rpm 中存在命令注入漏洞。如果源 RPM（source RPM）的源码文件或 spec 文件的基本文件名中包含 %() 宏构造，则在 rpm 重新定位源码文件列表时，会通过 popen() 执行攻击者控制的 shell 命令。这允许任意命令以调用者（通常是非 root 用户）的身份执行，只需安装、重建或以其他方式处理一个不受信任的 .src.rpm 文件即可。

CVSS 7.8 · High EPSS 0.58% · P46
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I. Basic Information for CVE-2026-95521

Vulnerability Information
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Vulnerability Title
Rpm: rpm: shell command injection via macro expansion of source/spec file basenames when installing a source rpm
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat Hardened Images - cpe:/a:redhat:hummingbird:1

II. Public POCs for CVE-2026-95521

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III. Intelligence Information for CVE-2026-95521

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Other References for CVE-2026-95521 (2)

Same Patch Batch · Red Hat · 2026-09-24 · 8 CVEs total

CVE-2026-90959 8.1 HIGH Pulpcore: pulpcore: file:// scheme allowlist bypass in content upload file_url field enabl
CVE-2026-95519 7.8 HIGH Rpm: code execution via macro expansion of manifest entries in `rpmgi` (`-q -p` / verify m
CVE-2026-97185 7.8 HIGH Gimp: gimp: out-of-bounds write in gimpressionist plugin via crafted preset file
CVE-2026-94416 6.8 MEDIUM Aap-gateway: aap-gateway: authorization bypass via workload identity token forgery
CVE-2026-97177 6.6 MEDIUM Keycloak-services: keycloak-services: generic user update bypasses denied reset-password p
CVE-2026-97311 4.3 MEDIUM Keycloak-services: keycloak-services: admin rest api role-groups endpoint discloses groups
CVE-2026-97176 4.2 MEDIUM Keycloak-services: keycloak-services: essential acr requirement silently bypassed via cook

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-78

V. Comments for CVE-2026-95521

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