CVE-2026-84838— Rpm: command injection in rpmuncompress via unescaped filenames passed to popen()
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rpmuncompress处理包含shell元字符的特制归档文件名时未正确转义，可能导致本地攻击者执行任意命令，影响数据的机密性、完整性和可用性。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting InterpreterAffected 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 |
unaffected |
| Red Hat | Red Hat Enterprise Linux 7 | any |
unaffected |
| Red Hat | Red Hat Enterprise Linux 8 | any |
unaffected |
| Red Hat | Red Hat Enterprise Linux 9 | any |
unaffected |
| Red Hat | Red Hat Hardened Images | 6.1.0-1.3.hum1< * |
unaffected |
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I. Basic Information for CVE-2026-84838
Vulnerability Information
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Vulnerability Title
Rpm: command injection in rpmuncompress via unescaped filenames passed to popen()
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in rpmuncompress. This command injection vulnerability allows a local attacker to execute arbitrary commands. This occurs when rpmuncompress processes a specially crafted archive filename containing shell metacharacters, which are not properly escaped before being passed to shell command strings. Successful exploitation requires user interaction, where a user or automated workflow invokes rpmuncompress on the malicious file, leading to high impact on the confidentiality, integrity, and availability of data accessible to the invoking user.
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rpmuncompress处理包含shell元字符的特制归档文件名时未正确转义，可能导致本地攻击者执行任意命令，影响数据的机密性、完整性和可用性。
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-2026-84838
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-84838 (2)
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-2026-84837 | 7.8 HIGH | Rpm: command injection in `rpmbuild -t*` (`gettarspec`) via unescaped tarball path |
| 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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