CVE-2026-63667
ApostropheCMS: Arbitrary file read via import-export attachment-name path traversal
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.
Fixes and workarounds
Fix
@apostrophecms/import-export (npm): OSV reports a fixed version 3.6.2. Check the advisory for supported release branches.
Source: OSV GHSA-79qf-vqgc-7xx3Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| apostrophe apostrophecms |
< 3.6.2 (affected) | CNA: GitHub_M |
@apostrophecms/import-export@apostrophecms/import-export
npm |
≥ 0; < 3.6.2 (affected, semver); OSV events: introduced 0; fixed 3.6.2Source events (semver)Other versions: unaffected |
OSV GHSA-79qf-vqgc-7xx3 |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 6.5 medium |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | CNA: GitHub_M |
| 3.1 / 6.5 medium |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | NVD: [email protected] |
Exploit evidence
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-79qf-vqgc-7xx3
exploit · ADP: CISA-ADP
References
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-79qf-vqgc-7xx3CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/apostrophecms/apostrophe/commit/87cccf44a23d09420875ca8a3765eb3db843836aCNA: GitHub_M · x_refsource_MISC
- https://github.com/apostrophecms/apostrophe/discussions/5516CNA: GitHub_M · x_refsource_MISC
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-79qf-vqgc-7xx3ADP: CISA-ADP · exploit
- https://github.com/apostrophecms/apostrophe/commit/87cccf44a23d09420875ca8a3765eb3db843836a[email protected]
- https://github.com/apostrophecms/apostrophe/discussions/5516[email protected]
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-79qf-vqgc-7xx3[email protected]
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-79qf-vqgc-7xx3134c704f-9b21-4f2e-91b3-4a467353bcc0
- https://github.com/advisories/GHSA-79qf-vqgc-7xx3OSV / GitHub Security Advisories · advisory
- https://osv.dev/vulnerability/GHSA-79qf-vqgc-7xx3OSV / GitHub Security Advisories · osv
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