CVE-2026-113711 ApostropheCMS: Unauthenticated resource exhaustion via pre-auth aposBigUpload processing in @apostrophecms/import-export
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-113711?
CVE-2026-113711 is a high-severity vulnerability in @apostrophecms apostrophe, published on 20 Oct 2026.
Official 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.
Which versions are affected by CVE-2026-113711?
4 open source packages ship an affected version, including @apostrophecms/import-export and apostrophe.
| Package | Affected | Fixed in |
|---|---|---|
@apostrophecms/import-export npm | All versions | 3.7.0 |
@apostrophecms/import-export npm | All versions | 3.7.0 |
apostrophe npm | All versions | 4.33.0 |
apostrophe npm | All versions | 4.33.0 |
How do I fix CVE-2026-113711?
Upgrade @apostrophecms/import-export to 3.7.0 or later.
Is CVE-2026-113711 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-113711 exists.
Sources
Also known as GHSA-86wm-68pq-5jwq.