CVE-2026-85013 Command injection in Red Hat Enterprise Linux 10
Local attackers can execute arbitrary commands via shell metacharacters in module names during Bash completion, affecting Linux users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-85013?
CVE-2026-85013 is a high-severity command injection vulnerability in Red Hat Enterprise Linux 10, published on 15 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A flaw was found in environment-modules. A local attacker can exploit this vulnerability by placing a maliciously named modulefile in a location visible to the victim's `MODULEPATH`. When the victim uses Bash completion for `module` or `ml` commands, the malicious module name, containing shell metacharacters, is evaluated as a command. This can lead to arbitrary command execution in the completing user's shell, impacting their confidentiality, integrity, and availability.
Weakness: CWE-78
Which versions are affected by CVE-2026-85013?
Linux distribution packages (17)
environment-modules AlmaLinux:10 | All versions | 5.6.1-2.el10_2.1 |
environment-modules AlmaLinux:8 | All versions | 4.5.2-5.el8_10 |
environment-modules AlmaLinux:9 | All versions | 5.3.0-2.el9_8.1 |
environment-modules Red Hat:enterprise_linux:10.2 | All versions | 0:5.6.1-2.el10_2.1 |
environment-modules-debuginfo Red Hat:enterprise_linux:10.2 | All versions | 0:5.6.1-2.el10_2.1 |
environment-modules-debugsource Red Hat:enterprise_linux:10.2 | All versions | 0:5.6.1-2.el10_2.1 |
environment-modules Red Hat:enterprise_linux:8::baseos | All versions | 0:4.5.2-5.el8_10 |
environment-modules-compat-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.5.2-5.el8_10 |
environment-modules-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.5.2-5.el8_10 |
environment-modules-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:4.5.2-5.el8_10 |
environment-modules Red Hat:enterprise_linux:9::baseos | All versions | 0:5.3.0-2.el9_8.1 |
environment-modules-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 0:5.3.0-2.el9_8.1 |
environment-modules-debugsource Red Hat:enterprise_linux:9::baseos | All versions | 0:5.3.0-2.el9_8.1 |
environment-modules Red Hat:hummingbird:1 | All versions | 0:5.6.2-1.hum1 |
environment-modules Rocky Linux:10 | All versions | 0:5.6.1-2.el10_2.1 |
environment-modules Rocky Linux:8 | All versions | 0:4.5.2-5.el8_10 |
environment-modules Rocky Linux:9 | All versions | 0:5.3.0-2.el9_8.1 |
How do I fix CVE-2026-85013?
Apply the vendor's patch.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-85013 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85013 exists.
Sources
Also known as ALSA-2026:80664, ALSA-2026:82919, ALSA-2026:84594, AZL-107969, DEBIAN-CVE-2026-85013, RHSA-2026:64766 and 7 more.