CVE-2026-63667
ApostropheCMS: Arbitrary file read via import-export attachment-name path traversal
MEDIUM 6.5EPSS 0.3%
ApostropheCMS is an open-source Node.js content management system. Prior to 3.6.2, the import-export module in packages/import-export/lib/formats/gzip.js constructs an attachment source path from the attacker-controlled _id, name, and extension fields in aposAttachments.json without ensuring that the resolved path remains under the extracted attachments directory, allowing an authenticated contributor to import a crafted archive, read a host file with an allowed extension, and publish the copied file at an unauthenticated uploads URL. This issue is fixed in version 3.6.2.
- Affected
- apostrophecms · apostrophe
- CVSS v3.1 GitHub_M
- 6.5 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - EPSS
- 0.34% chance of exploitation in the next 30 days, 27th percentile
- Published
- 2026-08-17