ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0 of ApostropheCMS and 3.7.0 of the import-export module, import routes invoke bigUploadMiddleware without an early authorize callback, allowing unauthenticated requests to perform upload initialization, chunk storage, temporary processing, and attacker-declared cleanup work before the later user check rejects the import. This issue is fixed in ApostropheCMS 4.33.0 and import-export 3.7.0.

Project Subscriptions

Vendors Products
Apostrophecms Subscribe
Apostrophecms Subscribe
Import-export Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 20 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Apostrophecms
Apostrophecms apostrophecms
Apostrophecms import-export
Vendors & Products Apostrophecms
Apostrophecms apostrophecms
Apostrophecms import-export

Tue, 20 Oct 2026 18:00:00 +0000

Type Values Removed Values Added
Description ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0 of ApostropheCMS and 3.7.0 of the import-export module, import routes invoke bigUploadMiddleware without an early authorize callback, allowing unauthenticated requests to perform upload initialization, chunk storage, temporary processing, and attacker-declared cleanup work before the later user check rejects the import. This issue is fixed in ApostropheCMS 4.33.0 and import-export 3.7.0.
Title ApostropheCMS: Unauthenticated resource exhaustion via pre-auth aposBigUpload processing in @apostrophecms/import-export
Weaknesses CWE-400
CWE-770
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-20T19:04:07.167Z

Reserved: 2026-10-20T16:03:14.862Z

Link: CVE-2026-113711

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-20T18:17:21.290

Modified: 2026-10-20T19:53:10.247

Link: CVE-2026-113711

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-20T20:15:06Z

Weaknesses