RHSA-2026:64766

Vulnerability from csaf_redhat - Published: 2026-09-07 09:12 - Updated: 2026-09-21 11:43
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: environment-modules: * environment-modules-5.6.2-1.hum1 (aarch64, x86_64) * environment-modules-5.6.2-1.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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.

7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
References
Acknowledgments
To clipboard 

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      "cve": "CVE-2026-85013",
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        "id": "CWE-78",
        "name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
      },
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      "ids": [
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          "text": "2465635"
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      "notes": [
        {
          "category": "description",
          "text": "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\u0027s `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\u0027s shell, impacting their confidentiality, integrity, and availability.",
          "title": "Vulnerability description"
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        {
          "category": "summary",
          "text": "environment-modules: Command injection in environment-modules Bash completion via malicious module names containing shell metacharacters",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This Moderate impact flaw in `environment-modules` allows a local attacker to execute arbitrary commands by crafting malicious module names. Exploitation requires the attacker to influence the `MODULEPATH` and the victim to use Bash completion for `module` or `ml` commands, triggering the vulnerability through user interaction. This limits the broad exploitability, aligning with a Moderate classification.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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          "Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@src",
          "Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@x86_64"
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85013"
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        {
          "category": "external",
          "summary": "https://github.com/envmodules/modules/security/advisories/GHSA-8hrw-p88g-qhmg",
          "url": "https://github.com/envmodules/modules/security/advisories/GHSA-8hrw-p88g-qhmg"
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      "release_date": "2026-09-15T14:10:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-07T09:12:19+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@aarch64",
            "Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@src",
            "Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@x86_64"
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            "category": "none"
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          "url": "https://access.redhat.com/errata/RHSA-2026:64766"
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        {
          "category": "workaround",
          "details": "To mitigate this issue, avoid enabling Bash completion for `module` and `ml` in environments where untrusted users can influence `MODULEPATH`. Additionally, ensure that shared module search paths do not include attacker-writable directories. As a practical measure, the affected completion script can be removed or disabled by commenting out its sourcing in shell configuration files (e.g., `~/.bashrc` or `/etc/profile.d/`). Users must start a new shell session for changes to take effect.",
          "product_ids": [
            "Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@aarch64",
            "Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@src",
            "Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@aarch64",
            "Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@src",
            "Red Hat Hardened Images:environment-modules-0:5.6.2-1.hum1@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "environment-modules: Command injection in environment-modules Bash completion via malicious module names containing shell metacharacters"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.