{
  "cveId": "CVE-2026-113776",
  "url": "https://patchblox.com/security/cve/CVE-2026-113776",
  "summary": "CVE-2026-113776 is fixed in 2 products on 1 platform, first by ALAS2023-2026-3409, released November 10, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "python3.13-virtualenv: virtualenv is a tool for creating isolated virtual python environments",
  "description": "virtualenv is a tool for creating isolated virtual python environments. From 20.26.6 until 21.14.2, ViaTemplateActivator.instantiate_template() replaces placeholders one key at a time across the complete activation template, so trigger names such as __VIRTUAL_NAME__, __VIRTUAL_ENV__, or __VIRTUAL_PROMPT__ inside an already substituted and quoted environment path or prompt can be replaced during a later pass. The later value\u0027s quoting can close the earlier literal and execute the remaining path when a user activates the environment through bash, fish, xonsh, or activate_this.py. The distinct csh prompt-display token __VIRTUAL_PROMPT_DISPLAY_TCSH__ can instead break the generated script without establishing command execution. The attacker must influence the destination path or --prompt, and a value without a relevant placeholder name does not trigger this mechanism. This issue is fixed in version 21.14.2.",
  "published": "2026-11-09T09:00:00Z",
  "severity": "important",
  "epss": 0.00269,
  "epssPercentile": 0.19252,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "python3-virtualenv",
      "release": "amzn 2023",
      "fixedVersion": "20.4.0-3.amzn2023.0.6",
      "fix": "ALAS2023-2026-3409",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3409",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "python3.13-virtualenv",
      "release": "amzn 2023",
      "fixedVersion": "20.21.1-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-3410",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3410",
      "released": "2026-11-10T03:55:23Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-11T13:47:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}