CVE-2026-78367— Rpm: rpmbuild gettarspec() crafted tar member name → macro injection
Quick assessment
Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 rpmbuild 中发现了一个缺陷。当 rpmbuild 以 tarball 模式处理经过精心构造的 tar 包时，一个特制的 tar 成员名称可能导致宏注入。此漏洞允许远程攻击者通过诱使用户构建恶意的 tar 包，在系统上执行任意代码。
Possible ATT&CK Techniques 2 AI
T1195 · Supply Chain Compromise T1059 · Command and Scripting InterpreterAffected Version Matrix 8
| 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 | any |
affected |
| Red Hat | Red Hat OpenShift Container Platform 4 | any |
unknown |
any |
unknown |
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I. Basic Information for CVE-2026-78367
Vulnerability Information
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Vulnerability Title
Rpm: rpmbuild gettarspec() crafted tar member name → macro injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in RPM's rpmbuild tarball processing. When processing a crafted source archive, the getTarSpec() function in tools/rpmbuild.cc passes an attacker-controlled tar archive member name to rpmExpand() as part of a %{basename:...} macro expression. A specially crafted .spec member name can therefore inject RPM macros, including Lua expressions, resulting in arbitrary code execution with the privileges of the user running rpmbuild. This can be exploited when a victim or automated build system processes an attacker-controlled source tarball using rpmbuild tarball mode (such as -ts, -ta, or -tb).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
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
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 | - |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 | - |
cpe:/a:redhat:openshift:4
|
|
II. Public POCs for CVE-2026-78367
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
Qwen3.6-35B-A3B
· 7535 chars
Pro+ exclusive includes:
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In-depth vulnerability mechanism
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100+ AI POC generations per month
III. Intelligence Information for CVE-2026-78367
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Vendor Advisories for CVE-2026-78367 (1)
-
🔗 2521857 – (CVE-2026-78367) CVE-2026-78367 rpm: rpmbuild getTarSpec() crafted tar member name → macro injection Read full article issue-tracking x_refsource_REDHAT
Proof of Concept for CVE-2026-78367 (1)
Same Patch Batch · Red Hat · 2026-08-24 · 5 CVEs total
| CVE-2026-71366 | 7.7 HIGH | Awx: notification backends allow ssrf and credential leakage |
| CVE-2026-71364 | 7.2 HIGH | Awx: project archive extraction allows path traversal file writes |
| CVE-2026-19685 | 7.1 HIGH | Networkmanager: networkmanager: 802-1x ca-path and phase2-ca-path bypass private_user rest |
| CVE-2026-78323 | 6.5 MEDIUM | Jss: jss: jsstrustmanager does not verify nss trust flags on ca certificates |
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