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  4. CVE 2026 113711 apostrophecms unauthenticated resource exhaustion
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Back to active CVEs
High · CVSS 7.5CVE-2026-113711

ApostropheCMS: Unauthenticated resource exhaustion via pre-auth aposBigUpload processing in @apostrophecms/import-exportCVE-2026-113711

Answer in brief

CVE-2026-113711 records a High severity (CVSS 7.5) vulnerability in ApostropheCMS: Unauthenticated resource exhaustion via pre-auth aposBigUpload processing in @apostrophecms/import-export. The current sources do not mark it as known exploited. The current feed maps apostrophecms/apostrophe (generic), @apostrophecms/import-export (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 20, 2026Updated Oct 20, 2026Source checked Oct 20, 2026First seen by HOL Oct 20, 2026Material review Oct 20, 2026
Upstream Advisory

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-400, CWE-770
Source
CVE List V5
Source checked
Oct 20, 2026
References
4 linked sources
Open source record

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps apostrophecms/apostrophe (generic), @apostrophecms/import-export (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
apostrophecms/apostrophegeneric<4.33.04.33.0
@apostrophecms/import-exportgeneric<3.7.03.7.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for apostrophecms/apostrophe, @apostrophecms/import-export.
  2. 2Review the reported fix. Update apostrophecms/apostrophe to 4.33.0; @apostrophecms/import-export to 3.7.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 20, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 20, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 20, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.