GHSA-5VRQ-6Q93-M3RF

Vulnerability from github – Published: 2026-09-23 21:30 – Updated: 2026-09-24 06:31
VLAI
Details

A flaw was found in Ansible Automation Platform's automation-controller. The custom Credential Type environment-variable injector validates variable names against a deny-list (an ANSIBLE_* prefix check plus a fixed ENV_BLOCKLIST) that omits process-hijacking loader variables such as BASH_ENV, ENV, LD_PRELOAD, LD_LIBRARY_PATH, PYTHONSTARTUP and GIT_SSH_COMMAND. Combined with the credential file injector, a privileged user can write an attacker-controlled script into the execution environment and point BASH_ENV at it, obtaining arbitrary code execution inside the execution-environment container for any job that attaches a credential of that type.

Severity
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-84706"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-184"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-23T20:17:17Z",
    "severity": "HIGH"
  },
  "details": "A flaw was found in Ansible Automation Platform\u0027s automation-controller. The custom\nCredential Type environment-variable injector validates variable names against a\ndeny-list (an ANSIBLE_* prefix check plus a fixed ENV_BLOCKLIST) that omits\nprocess-hijacking loader variables such as BASH_ENV, ENV, LD_PRELOAD, LD_LIBRARY_PATH,\nPYTHONSTARTUP and GIT_SSH_COMMAND. Combined with the credential file injector, a\nprivileged user can write an attacker-controlled script into the execution environment\nand point BASH_ENV at it, obtaining arbitrary code execution inside the\nexecution-environment container for any job that attaches a credential of that type.",
  "id": "GHSA-5vrq-6q93-m3rf",
  "modified": "2026-09-24T06:31:13Z",
  "published": "2026-09-23T21:30:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84706"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:71113"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:71114"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:71177"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:71179"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-84706"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527187"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}



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