Skip to content
OpenAdvisories
Medium · 5.3 CVE-2026-113656 EUVD-2026-105185GHSA-89mh-mm8c-mv7f

ApostropheCMS: Unauthenticated unbounded multipart upload → disk-exhaustion DoS

Published Oct 20, 2026 · Updated Oct 21, 2026 · Assigned by GitHub_M

Description

ApostropheCMS is an open-source Node.js content management system. Prior to 1.5.5 of the ApostropheCMS Form add-on, its form submission route stages unbounded multipart uploads before form validation or authentication and lacks upload size, count, and rate limits. Repeated unauthenticated submissions can consume temporary disk storage and disrupt form handling or other host services. This issue is fixed in ApostropheCMS Form 1.5.5.

Affected products

VendorProductAffectedFixed
apostrophecms apostrophe < 4.33.0 —
@apostrophecms form < 1.5.5 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @apostrophecms/form < 1.5.5 1.5.5 GHSA-89mh-mm8c-mv7f

References