CVE-2026-113711CWE-400CWE-770denial-of-service

CVE-2026-113711

High · published October 20, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
43.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00527 · 43.8th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-10-20T22:17Z
References (5)
https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce · [email protected]https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350 · [email protected]https://github.com/apostrophecms/apostrophe/releases/tag/[email protected] · [email protected]https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-86wm-68pq-5jwq · [email protected]https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-86wm-68pq-5jwq · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 22 OCT 03:29Z
    EPSS moved — → 1%
    epss
  • 20 OCT 17:49Z
    ApostropheCMS: Unauthenticated resource exhaustion via pre-auth aposBigUpload processing in @apostrophecms/import-export
    cvelistv5
  • 20 OCT 17:49Z
    ApostropheCMS: Unauthenticated resource exhaustion via pre-auth aposBigUpload processing in @apostrophecms/import-export
    cvelistv5