ApostropheCMS: Unauthenticated unbounded multipart upload → disk-exhaustion DoS
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.
CVE-2026-113656
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-113656
apostrophe
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
form
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "apostrophecms",
"product": "apostrophe",
"versions": [
{
"status": "affected",
"version": "< 4.33.0"
}
]
},
{
"vendor": "@apostrophecms",
"product": "form",
"versions": [
{
"status": "affected",
"version": "< 1.5.5"
}
]
}
]- Related CVEs
- CVE-2026-113656
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #49211 · Revision 1
- Added to Heist Feed
- Publisher date