Oh My Zsh: Arbitrary Code Execution in oh-my-zsh dotenv plugin via malicious .env files

{
  "id": "9ab24aa13afb655f0449c49bdcafae9760bbcbd69c3165b4fdc468505844a652",
  "url": "https://osv.dev/vulnerability/CVE-2026-50187",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Oh My Zsh: Arbitrary Code Execution in oh-my-zsh dotenv plugin via malicious .env files",
    "summary": "Oh My Zsh is a community-driven framework for managing Zsh configuration. Prior to 2026-05-28, the dotenv plugin in plugins/dotenv/dotenv.plugin.zsh passes ZSH_DOTENV_FILE to source after a directory change into a folder containing a .env file, allowing syntactically valid shell commands in the file to execute with the current account's privileges, including without a prompt when ZSH_DOTENV_PROMPT=false or after the default prompt accepts an empty Enter response. This issue is fixed in versions released after 2026-05-28.",
    "evidence": "osv:CVE-2026-50187",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-50187",
      "aliases": [
        "CVE-2026-50187",
        "GHSA-3rgh-p3mg-rjqg"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ohmyzsh/ohmyzsh",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "d170d18746bb06db7b2fc97b67e281597a3fc152"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "d170d18746bb06db7b2fc97b67e281597a3fc152"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50187.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.287895839Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50187.json",
        "https://github.com/ohmyzsh/ohmyzsh/security/advisories/GHSA-3rgh-p3mg-rjqg",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-50187",
        "https://github.com/ohmyzsh/ohmyzsh/commit/d170d18746bb06db7b2fc97b67e281597a3fc152",
        "https://github.com/ohmyzsh/ohmyzsh/pull/13778"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-94"
        ],
        "cna_assigner": "GitHub_M",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "2026-05-28"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              }
            ]
          },
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "2026-05-28"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50187.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-50187",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493864,
  "published_at": "2026-08-18T15:09:51.956+00:00"
}