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.

The version of environment-modules installed on the remote host is prior to 3.2.10-11. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3942 advisory.

    _module_comgen_words_and_files() fed untrusted text (module names readoff disk, LOADEDMODULES, MODULEPATH)     straight into `compgen -W`, whichperforms a full unquoted-word expansion on its wordlist --     includingcommand substitution -- as a normal, documented part of its behavior.A module name, loaded-module     entry, or MODULEPATH component containinge.g. `$(...)` therefore ran arbitrary shell code the moment a     userpressed Tab. (CVE-2026-85013)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-3135 advisory.

    _module_comgen_words_and_files() fed untrusted text (module names readoff disk, LOADEDMODULES, MODULEPATH)     straight into `compgen -W`, whichperforms a full unquoted-word expansion on its wordlist --     includingcommand substitution -- as a normal, documented part of its behavior.A module name, loaded-module     entry, or MODULEPATH component containinge.g. `$(...)` therefore ran arbitrary shell code the moment a     userpressed Tab. (CVE-2026-85013)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:1035 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2026-85013:
    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.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-6a8bb95fd4 advisory.

    Update to 5.6.2 (fix CVE-2026-85013)

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-c419d5048d advisory.

    Update to 5.6.2 (fix CVE-2026-85013)



Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 45 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-972718725c advisory.

    Update to 5.6.2 (fix CVE-2026-85013)

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-85013)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
351114	Amazon Linux 2 : environment-modules (ALAS-2026-3942)	Nessus	Amazon Linux Local Security Checks	Local	high
351041	Amazon Linux 2023 : environment-modules, environment-modules-compat (ALAS2023-2026-3135)	Nessus	Amazon Linux Local Security Checks	Local	high
349539	TencentOS Server 4: environment-modules (TSSA-2026:1035)	Nessus	Tencent Local Security Checks	Local	high
346197	Fedora 43 : environment-modules (2026-6a8bb95fd4)	Nessus	Fedora Local Security Checks	Local	high
346025	Fedora 44 : environment-modules (2026-c419d5048d)	Nessus	Fedora Local Security Checks	Local	high
346024	Fedora 45 : environment-modules (2026-972718725c)	Nessus	Fedora Local Security Checks	Local	high
343440	Linux Distros Unpatched Vulnerability : CVE-2026-85013	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-85013

high

Tenable Plugins

high

high

high

high

high

high

high