Vulnerability-Lookup

RHSA-2026:80664

Vulnerability from csaf_redhat - Published: 2026-10-12 10:16 - Updated: 2026-10-12 14:16

Summary

Red Hat Security Advisory: environment-modules security update

Severity

Moderate

Notes

Topic: An update for environment-modules is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: The environment-modules packages provide dynamic modification of user environment using module files. Each module file contains the information needed to configure the shell for an application. Once the package is initialized, the environment can be modified on a per-module basis using the "module" utility, which interprets module files. Security Fix(es): * environment-modules: Command injection in environment-modules Bash completion via malicious module names containing shell metacharacters (CVE-2026-85013) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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

Fixed 13 products

Product	Version	Remediation
Unresolved product id: BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.s390x	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.src	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.s390x	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.s390x	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

References

9 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:80664	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2465635	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-85013	self
https://bugzilla.redhat.com/show_bug.cgi?id=2465635	external
https://www.cve.org/CVERecord?id=CVE-2026-85013	external
https://nvd.nist.gov/vuln/detail/CVE-2026-85013	external
https://github.com/envmodules/modules/security/ad…	external

Acknowledgments

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for environment-modules is now available for Red Hat Enterprise Linux 10.\n\nRed Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "The environment-modules packages provide dynamic modification of user environment using module files. Each module file contains the information needed to configure the shell for an application. Once the package is initialized, the environment can be modified on a per-module basis using the \"module\" utility, which interprets module files.\n\nSecurity Fix(es):\n\n* environment-modules: Command injection in environment-modules Bash completion via malicious module names containing shell metacharacters (CVE-2026-85013)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "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.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2026:80664",
        "url": "https://access.redhat.com/errata/RHSA-2026:80664"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#moderate",
        "url": "https://access.redhat.com/security/updates/classification/#moderate"
      },
      {
        "category": "external",
        "summary": "2465635",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2465635"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_80664.json"
      }
    ],
    "title": "Red Hat Security Advisory: environment-modules security update",
    "tracking": {
      "current_release_date": "2026-10-12T14:16:48+00:00",
      "generator": {
        "date": "2026-10-12T14:16:48+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.4.2"
        }
      },
      "id": "RHSA-2026:80664",
      "initial_release_date": "2026-10-12T10:16:41+00:00",
      "revision_history": [
        {
          "date": "2026-10-12T10:16:41+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-10-12T10:16:41+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-10-12T14:16:48+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux BaseOS (v. 10)",
                "product": {
                  "name": "Red Hat Enterprise Linux BaseOS (v. 10)",
                  "product_id": "BaseOS-10.2.Z",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:10.2"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Enterprise Linux"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "environment-modules-0:5.6.1-2.el10_2.1.x86_64",
                "product": {
                  "name": "environment-modules-0:5.6.1-2.el10_2.1.x86_64",
                  "product_id": "environment-modules-0:5.6.1-2.el10_2.1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules@5.6.1-2.el10_2.1?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.x86_64",
                "product": {
                  "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.x86_64",
                  "product_id": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules-debugsource@5.6.1-2.el10_2.1?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.x86_64",
                "product": {
                  "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.x86_64",
                  "product_id": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules-debuginfo@5.6.1-2.el10_2.1?arch=x86_64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "environment-modules-0:5.6.1-2.el10_2.1.src",
                "product": {
                  "name": "environment-modules-0:5.6.1-2.el10_2.1.src",
                  "product_id": "environment-modules-0:5.6.1-2.el10_2.1.src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules@5.6.1-2.el10_2.1?arch=src"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "environment-modules-0:5.6.1-2.el10_2.1.aarch64",
                "product": {
                  "name": "environment-modules-0:5.6.1-2.el10_2.1.aarch64",
                  "product_id": "environment-modules-0:5.6.1-2.el10_2.1.aarch64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules@5.6.1-2.el10_2.1?arch=aarch64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.aarch64",
                "product": {
                  "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.aarch64",
                  "product_id": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.aarch64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules-debugsource@5.6.1-2.el10_2.1?arch=aarch64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.aarch64",
                "product": {
                  "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.aarch64",
                  "product_id": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.aarch64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules-debuginfo@5.6.1-2.el10_2.1?arch=aarch64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "environment-modules-0:5.6.1-2.el10_2.1.ppc64le",
                "product": {
                  "name": "environment-modules-0:5.6.1-2.el10_2.1.ppc64le",
                  "product_id": "environment-modules-0:5.6.1-2.el10_2.1.ppc64le",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules@5.6.1-2.el10_2.1?arch=ppc64le"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.ppc64le",
                "product": {
                  "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.ppc64le",
                  "product_id": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.ppc64le",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules-debugsource@5.6.1-2.el10_2.1?arch=ppc64le"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.ppc64le",
                "product": {
                  "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.ppc64le",
                  "product_id": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.ppc64le",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules-debuginfo@5.6.1-2.el10_2.1?arch=ppc64le"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "ppc64le"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "environment-modules-0:5.6.1-2.el10_2.1.s390x",
                "product": {
                  "name": "environment-modules-0:5.6.1-2.el10_2.1.s390x",
                  "product_id": "environment-modules-0:5.6.1-2.el10_2.1.s390x",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules@5.6.1-2.el10_2.1?arch=s390x"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.s390x",
                "product": {
                  "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.s390x",
                  "product_id": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.s390x",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules-debugsource@5.6.1-2.el10_2.1?arch=s390x"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.s390x",
                "product": {
                  "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.s390x",
                  "product_id": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.s390x",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/environment-modules-debuginfo@5.6.1-2.el10_2.1?arch=s390x"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "s390x"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-0:5.6.1-2.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.aarch64"
        },
        "product_reference": "environment-modules-0:5.6.1-2.el10_2.1.aarch64",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-0:5.6.1-2.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.ppc64le"
        },
        "product_reference": "environment-modules-0:5.6.1-2.el10_2.1.ppc64le",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-0:5.6.1-2.el10_2.1.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.s390x"
        },
        "product_reference": "environment-modules-0:5.6.1-2.el10_2.1.s390x",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-0:5.6.1-2.el10_2.1.src as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.src"
        },
        "product_reference": "environment-modules-0:5.6.1-2.el10_2.1.src",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-0:5.6.1-2.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.x86_64"
        },
        "product_reference": "environment-modules-0:5.6.1-2.el10_2.1.x86_64",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.aarch64"
        },
        "product_reference": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.aarch64",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.ppc64le"
        },
        "product_reference": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.ppc64le",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.s390x"
        },
        "product_reference": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.s390x",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.x86_64"
        },
        "product_reference": "environment-modules-debuginfo-0:5.6.1-2.el10_2.1.x86_64",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.aarch64"
        },
        "product_reference": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.aarch64",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.ppc64le"
        },
        "product_reference": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.ppc64le",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.s390x"
        },
        "product_reference": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.s390x",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)",
          "product_id": "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.x86_64"
        },
        "product_reference": "environment-modules-debugsource-0:5.6.1-2.el10_2.1.x86_64",
        "relates_to_product_reference": "BaseOS-10.2.Z"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2026-85013",
      "cwe": {
        "id": "CWE-78",
        "name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
      },
      "discovery_date": "2026-05-04T15:54:57+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2465635"
        }
      ],
      "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"
        },
        {
          "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"
        }
      ],
      "product_status": {
        "fixed": [
          "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.aarch64",
          "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.ppc64le",
          "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.s390x",
          "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.src",
          "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.x86_64",
          "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.aarch64",
          "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.ppc64le",
          "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.s390x",
          "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.x86_64",
          "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.aarch64",
          "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.ppc64le",
          "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.s390x",
          "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-85013"
        },
        {
          "category": "external",
          "summary": "RHBZ#2465635",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2465635"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-85013",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-85013"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-85013",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85013"
        },
        {
          "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"
        }
      ],
      "release_date": "2026-09-15T14:10:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-12T10:16:41+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.aarch64",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.ppc64le",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.s390x",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.src",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.x86_64",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.aarch64",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.ppc64le",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.s390x",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.x86_64",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.aarch64",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.ppc64le",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.s390x",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:80664"
        },
        {
          "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": [
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.aarch64",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.ppc64le",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.s390x",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.src",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.x86_64",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.aarch64",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.ppc64le",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.s390x",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.x86_64",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.aarch64",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.ppc64le",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.s390x",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.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": [
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.aarch64",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.ppc64le",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.s390x",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.src",
            "BaseOS-10.2.Z:environment-modules-0:5.6.1-2.el10_2.1.x86_64",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.aarch64",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.ppc64le",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.s390x",
            "BaseOS-10.2.Z:environment-modules-debuginfo-0:5.6.1-2.el10_2.1.x86_64",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.aarch64",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.ppc64le",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.s390x",
            "BaseOS-10.2.Z:environment-modules-debugsource-0:5.6.1-2.el10_2.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "environment-modules: Command injection in environment-modules Bash completion via malicious module names containing shell metacharacters"
    }
  ]
}

CVE-2026-85013 (GCVE-0-2026-85013)

Vulnerability from cvelistv5 – Published: 2026-09-15 15:08 – Updated: 2026-10-12 14:16

Title

Environment-modules: command injection in environment-modules bash completion via malicious module names containing shell metacharacters

Summary

Severity

7.3 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-15 17:20 UTC

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

redhat CNA under the redhat root

CNA scorecard B 81/100 over 978 records in the last 180 days details

References

5 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:64766	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:80664	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-85013	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2465635	issue-trackingx_refsource_REDHAT
https://github.com/envmodules/modules/security/ad…

Impacted products

6 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:5.6.1-2.el10_2.1 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Hardened Images	Unaffected: 5.6.2-1.hum1 , < * (rpm) cpe:/a:redhat:hummingbird:1
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

Date Public

2026-09-15 14:10

Credits

This issue was discovered by Found by AISLE in partnership with Red Hat.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-85013",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-15T17:20:35.841689Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-15T17:21:51.961Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/envmodules/modules/security/advisories/GHSA-8hrw-p88g-qhmg"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.2"
          ],
          "defaultStatus": "affected",
          "packageName": "environment-modules",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:5.6.1-2.el10_2.1",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "cpes": [
            "cpe:/a:redhat:hummingbird:1"
          ],
          "defaultStatus": "affected",
          "packageName": "environment-modules-main",
          "product": "Red Hat Hardened Images",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "5.6.2-1.hum1",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:6"
          ],
          "defaultStatus": "unknown",
          "packageName": "environment-modules",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "affected",
          "packageName": "environment-modules",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
          ],
          "defaultStatus": "affected",
          "packageName": "environment-modules",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "defaultStatus": "affected",
          "packageName": "environment-modules",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "This issue was discovered by Found by AISLE in partnership with Red Hat."
        }
      ],
      "datePublic": "2026-09-15T14:10:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Moderate"
            },
            "type": "Red Hat severity rating"
          }
        },
        {
          "cvssV3_1": {
            "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"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-12T14:16:54.036Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "RHSA-2026:64766",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:64766"
        },
        {
          "name": "RHSA-2026:80664",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:80664"
        },
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-85013"
        },
        {
          "name": "RHBZ#2465635",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2465635"
        },
        {
          "url": "https://github.com/envmodules/modules/security/advisories/GHSA-8hrw-p88g-qhmg"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-04T15:54:57.000Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-09-15T14:10:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Environment-modules: command injection in environment-modules bash completion via malicious module names containing shell metacharacters",
      "workarounds": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-85013",
    "datePublished": "2026-09-15T15:08:33.907Z",
    "dateReserved": "2026-09-02T19:15:03.876Z",
    "dateUpdated": "2026-10-12T14:16:54.036Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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.

Action not permitted

RHSA-2026:80664

CVE-2026-85013 (GCVE-0-2026-85013)

Tags

Sightings

Nomenclature

Related by attack behaviour