Ghost: Remote Code Execution via Theme Translation Files

{
  "id": "a87e1240b1b62165231a34383c34ea97902880c44ea88da121f8d1b81eb66bc3",
  "url": "https://osv.dev/vulnerability/GHSA-jj74-hc2q-xrvm",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Ghost: Remote Code Execution via Theme Translation Files",
    "summary": "### Impact A vulnerability in how Ghost loads theme translation files allowed an authenticated Administrator to execute arbitrary code on the server via a crafted theme. ### Vulnerable versions This vulnerability is present in Ghost from v6.10.3 up to v6.64.0. ### Patches v6.64.0 contains a fix for this issue. ### How to update For self-hosters using Docker, find [Docker's official Ghost image here](https://hub.docker.com/_/ghost). Updating a Docker-based Ghost instance [is documented here](https://docs.ghost.org/install/docker#updating-ghost). If your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update). ### References Ghost thanks [Miguel Segovia Gil](https://github.com/msegoviag) of KPMG, [Alemmi](https://github.com/Alemmi), and [Tomer-PL](https://github.com/Tomer-PL) for disclosing this vulnerability responsibly. ### For more information If you have any questions or comments about this advisory, email us at [security@ghost.org](mailto:security@ghost.org).",
    "evidence": "osv:GHSA-jj74-hc2q-xrvm",
    "products": [
      {
        "name": {
          "value": "ghost",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.64.0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "GHSA-jj74-hc2q-xrvm",
      "aliases": [
        "BIT-ghost-2026-104418",
        "BIT-ghost-2026-105677",
        "CVE-2026-104418",
        "CVE-2026-105677",
        "GHSA-jj74-hc2q-xrvm"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "6.10.3"
                },
                {
                  "fixed": "6.64.0"
                }
              ]
            }
          ],
          "package": {
            "name": "ghost",
            "purl": "pkg:npm/ghost",
            "ecosystem": "npm"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-jj74-hc2q-xrvm/GHSA-jj74-hc2q-xrvm.json"
          }
        }
      ],
      "modified": "2026-10-13T08:26:11.824680357Z",
      "provider": "osv",
      "references": [
        "https://github.com/TryGhost/Ghost/security/advisories/GHSA-jj74-hc2q-xrvm",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-105677",
        "https://github.com/TryGhost/Ghost/issues/30635",
        "https://github.com/TryGhost/Ghost/commit/d2f498694be549074dd5817fd0e8a1371b65df02",
        "https://github.com/TryGhost/Ghost",
        "https://github.com/TryGhost/Ghost/releases/tag/v6.64.0"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22",
          "CWE-829",
          "CWE-94"
        ],
        "severity": "HIGH",
        "github_reviewed": true,
        "nvd_published_at": "2026-10-05T20:17:14Z",
        "github_reviewed_at": "2026-10-07T20:26:08Z"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-104418",
        "evidence": "/aliases"
      },
      {
        "value": "CVE-2026-105677",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 307518,
  "published_at": "2026-10-07T20:26:08+00:00"
}