CVE-2026-63667

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.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-25)

CWE

CWE-22

Published

2026-08-17

Modified

2026-10-23

Record from

the NVD, synced 2026-10-23

Packages (OSV)

References

• https://github.com/apostrophecms/apostrophe/commit/87cccf44a23d09420875ca8a3765eb3db843836a
• https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-79qf-vqgc-7xx3
• https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-79qf-vqgc-7xx3

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