{"id":"CVE-2026-70593","aliases":["BIT-ghost-2026-70593","EUVD-2026-52977","GHSA-cjc9-q5gf-327p"],"status":"published","title":"Ghost: Theme Upload Path Traversal","description":"Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBase and theme storage name handling. This issue is fixed in version 6.54.1.","severity":{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00412,"percentile":0.35973,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2026-08-04T21:49:49Z","modified":"2026-10-28T02:31:03Z","fixes":[{"ecosystem":"npm","package":"ghost","fixed_in":["6.54.1"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"ghost","fixed_in":["6.54.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"ghost","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.10.0"},{"fixed":"6.54.1"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"ghost","ranges":[{"type":"SEMVER","events":[{"introduced":"0.10.0"},{"fixed":"6.54.1"}]}]},{"source":"osv","ecosystem":"npm","package":"ghost","ranges":[{"type":"SEMVER","events":[{"introduced":"0.10.0"},{"fixed":"6.54.1"}]}]}],"products":[{"vendor":"tryghost","product":"ghost"}],"references":[{"url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-cjc9-q5gf-327p","tags":["x_refsource_CONFIRM","web","advisory"]},{"url":"https://github.com/TryGhost/Ghost/commit/fbaa92327e52607036a1e42204c9eadcc751d82c","tags":["x_refsource_MISC","web","fix"]},{"url":"https://github.com/TryGhost/Ghost/releases/tag/v6.54.1","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/advisories/GHSA-cjc9-q5gf-327p"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70593","tags":["web","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70593.json","tags":["advisory"]},{"url":"https://github.com/TryGhost/Ghost","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-70593","title":"Ghost: Theme Upload Path Traversal","description":"Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBase and theme storage name handling. This issue is fixed in version 6.54.1.","status":"published","published":"2026-08-04T21:49:49.968Z","modified":"2026-08-05T14:28:19.405Z","cvss":[{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T13:35:33.380441Z"}],"euvd":[{"id":"EUVD-2026-52977","description":"Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBase and theme storage name handling. This issue is fixed in version 6.54.1.","status":"published","published":"2026-08-04T21:49:49Z","modified":"2026-08-05T14:28:19Z","cvss":[{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L","level":"medium"}],"updated_at":"2026-11-02T18:02:10.319044Z"}],"ghsa":[{"id":"GHSA-cjc9-q5gf-327p","title":"Ghost: Theme Upload Path Traversal","description":"### Impact\n\nA vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v0.10.0 up to v6.54.0.\n\n### Patches\n\nv6.54.1 contains a fix for this issue.\n\n### How to update\n\nFor 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). \n\nIf your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update). \n\n### References\n\nGhost thanks Stephen Sims, Off By One Security for disclosing this vulnerability responsibly.\n\n### For more information\n\nIf you have any questions or comments about this advisory, email Ghost at [security@ghost.org](mailto:security@ghost.org).","status":"published","published":"2026-08-04T21:49:56Z","modified":"2026-08-04T21:49:59Z","cvss":[{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:40:56.852119Z"}],"nvd":[{"id":"CVE-2026-70593","description":"Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBase and theme storage name handling. This issue is fixed in version 6.54.1.","status":"published","published":"2026-08-04T22:17:17.29Z","modified":"2026-10-24T15:10:00.19Z","cvss":[{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:12:34.643497Z"}],"osv":[{"id":"CVE-2026-70593","title":"Ghost: Theme Upload Path Traversal","description":"Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBase and theme storage name handling. This issue is fixed in version 6.54.1.","status":"published","published":"2026-08-04T21:49:49.968Z","modified":"2026-10-28T02:31:03.33005537Z","cvss":[{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:45:15.164658Z"},{"id":"GHSA-cjc9-q5gf-327p","title":"Ghost: Theme Upload Path Traversal","description":"### Impact\n\nA vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v0.10.0 up to v6.54.0.\n\n### Patches\n\nv6.54.1 contains a fix for this issue.\n\n### How to update\n\nFor 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). \n\nIf your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update). \n\n### References\n\nGhost thanks Stephen Sims, Off By One Security for disclosing this vulnerability responsibly.\n\n### For more information\n\nIf you have any questions or comments about this advisory, email Ghost at [security@ghost.org](mailto:security@ghost.org).","status":"published","published":"2026-08-04T21:49:56Z","modified":"2026-08-17T08:10:30.757417724Z","cvss":[{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:46:45.28161Z"},{"id":"BIT-ghost-2026-70593","title":"Ghost: Theme Upload Path Traversal","description":"Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBase and theme storage name handling. This issue is fixed in version 6.54.1.","status":"published","published":"2026-08-17T05:41:02.988Z","modified":"2026-08-17T08:10:30.757417724Z","updated_at":"2026-11-02T15:28:29.999658Z"}]}}