CVE-2026-113711 Details
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.
A denial-of-service vulnerability has been identified in ApostropheCMS versions prior to 4.33.0, specifically within the import-export module, prior to version 3.7.0. The issue arises because import routes invoke 'bigUploadMiddleware' without an initial authorization callback. This oversight allows unauthenticated requests to initiate uploads, store chunks, process temporary files, and execute cleanup tasks, all before the authentication check is applied. As a result, an unauthenticated remote attacker can exploit this vulnerability to create a server-side upload state, consume storage, and amplify cleanup operations by manipulating chunk data.
Users can upgrade to ApostropheCMS version 4.33.0 and the import-export module version 3.7.0 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 20, 2026CISA-ADP
Assessed Oct 20, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-86wm-68pq-5jwq | CISA-ADP | AdvisoryRemedyVendor |
| https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce | [email protected] | Source CodeVendor |
| https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350 | [email protected] | Source CodeVendor |
| https://github.com/apostrophecms/apostrophe/releases/tag/[email protected] | [email protected] | Release NotesVendor |
| https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-86wm-68pq-5jwq | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
| CWE-770 | Allocation of Resources Without Limits or Throttling | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| ApostropheCMS | < 4.33.0 (semver) |
CPE
Remediation
| |
| ApostropheCMS import-export | < 3.7.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 20, 2026 | CVE Modified | CISA-ADP |
| Oct 20, 2026 | New CVE Received | [email protected] |