Vulnerabilities in pkg:npm/@tryghost/portal

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gv6q-2m97-882h",
  "modified" : "2026-01-28T16:12:00Z",
  "published" : "2026-01-28T16:11:59Z",
  "aliases" : [ "CVE-2026-24778" ],
  "summary" : "Ghost vulnerable to XSS via malicious Portal preview links",
  "details" : "### Impact\nAn attacker was able to craft a malicious link that, when accessed by an authenticated staff user or member, would execute JavaScript with the victim's permissions, potentially leading to account takeover. \n\n### Vulnerable versions\nThis vulnerability is present in Ghost versions:\n- v5.43.0 to v5.120.4\n- v6.0.0 to v6.14.0\n\nAs well as in Portal versions:\n- v2.29.1 to v2.51.4\n- v2.52.0 to v2.57.0\n\n### Patches\nGhost automatically loads the latest patch of the members Portal component via CDN. Therefore:\n- For Ghost 5.x users, upgrading to v5.121.0 or later fixes the vulnerability (loads Portal v2.51.5, which contains the patch)\n- For Ghost 6.x users, upgrading to v6.15.0 or later fixes the vulnerability (loads Portal v2.57.1, which contains the patch)\n\nFor Ghost installations using a customised or self-hosted version of Portal, it will be necessary to manually rebuild from or update to the latest patch version.\n\n### References\nGhost thanks Younes Belalia for discovering and disclosing this vulnerability responsibly.\n\n### For more information\nIf users have any questions or comments about this advisory, email Ghost at [security@ghost.org](mailto:security@ghost.org).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "ghost"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.43.0"
      }, {
        "fixed" : "5.121.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@tryghost/portal"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.29.1"
      }, {
        "fixed" : "2.51.5"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@tryghost/portal"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.52.0"
      }, {
        "fixed" : "2.57.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "ghost"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "fixed" : "6.15.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/security/advisories/GHSA-gv6q-2m97-882h"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-24778"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/commit/da858e640e88e69c1773a7b7ecdc2008fa143849"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TryGhost/Ghost"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-28T16:11:59Z",
    "nvd_published_at" : "2026-01-27T22:15:57Z"
  }
}