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CVE-2026-63667 ApostropheCMS is an open-source Node.js content management system

Description

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 products and versions

Product Affected versions Fixed in
apostrophe 3.6 earliest → < 3.6.2 3.6.2

References

Timeline

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