CVE-2026-84837— Rpm: command injection in `rpmbuild -t*` (`gettarspec`) via unescaped tarball path
Quick assessment
Affected
Red Hat Red Hat Hardened Images
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.
RPM是Rpm团队开源的一款操作系统软件包管理工具。 RPM存在命令注入漏洞，该漏洞源于rpmbuild -t*处理tar包时未充分验证路径或文件名中的shell元字符，存在命令注入漏洞，可能导致攻击者以构建用户权限执行任意命令，造成信息泄露或构建环境中断。
Possible ATT&CK Techniques 3 AI
T1078 · Valid Accounts T1083 · File and Directory Discovery T1059.001 · PowerShellAffected Version Matrix 6
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | any |
affected |
| Red Hat | Red Hat Enterprise Linux 6 | any |
unknown |
| Red Hat | Red Hat Enterprise Linux 7 | any |
affected |
| Red Hat | Red Hat Enterprise Linux 8 | any |
affected |
| Red Hat | Red Hat Enterprise Linux 9 | any |
affected |
| Red Hat | Red Hat Hardened Images | 6.1.0-1.3.hum1< * |
unaffected |
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I. Basic Information for CVE-2026-84837
Vulnerability Information
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Vulnerability Title
Rpm: command injection in `rpmbuild -t*` (`gettarspec`) via unescaped tarball path
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in rpm. An attacker can exploit a command injection vulnerability by influencing the path or filename of a tarball processed by `rpmbuild -t*` to include shell metacharacters. This is particularly relevant in automated build or continuous integration (CI) workflows that ingest externally supplied artifact names. Successful exploitation allows for arbitrary command execution with the privileges of the build user, which could lead to information disclosure or disruption of the build environment.
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
Vulnerability Title
RPM 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RPM是Rpm团队开源的一款操作系统软件包管理工具。 RPM存在命令注入漏洞，该漏洞源于rpmbuild -t*处理tar包时未充分验证路径或文件名中的shell元字符，存在命令注入漏洞，可能导致攻击者以构建用户权限执行任意命令，造成信息泄露或构建环境中断。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Hardened Images | 6.1.0-1.3.hum1 ~ * |
cpe:/a:redhat:hummingbird:1
|
|
| 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
|
|
II. Public POCs for CVE-2026-84837
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-84837 (2)
-
🔗 https://access.redhat.com/security/cve/CVE-2026-84837 Read full article vdb-entry x_refsource_REDHAT
-
Same Patch Batch · Red Hat · 2026-09-02 · 8 CVEs total
| CVE-2026-66786 | 9.1 CRITICAL | Submariner: submariner: ipsec.conf stanza injection via remote-supplied cablename and subn |
| CVE-2026-78408 | 7.9 HIGH | Util-linux: util-linux: nsenter --join-cgroup leaks root cgroup migration authority |
| CVE-2026-84838 | 7.8 HIGH | Rpm: command injection in rpmuncompress via unescaped filenames passed to popen() |
| CVE-2026-78410 | 7.8 HIGH | Util-linux: util-linux: restricted bind mounts do not pin the source, allowing x-mount.own |
| CVE-2026-78409 | 7.0 HIGH | Util-linux: util-linux: x-mount.subdir detached-tree resolution can escape via intermediat |
| CVE-2026-82968 | 6.4 MEDIUM | Keycloak-services: keycloak-services: cross-session email verification proof not bound to |
| CVE-2026-53683 | 4.3 MEDIUM | Freeipa: idm: idm/freeipa web ui - client-side open redirect in reset_password.html |
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