CVE-2026-113656
ApostropheCMS: Unauthenticated unbounded multipart upload → disk-exhaustion DoS
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-770 |
| Vendor | apostrophecms |
| Product | apostrophe |
| Published | Oct 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
apostrophecms / apostrophe
< 4.33.0
@apostrophecms / form
< 1.5.5
References
github.com: https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-89mh-mm8c-mv7f github.com: https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce github.com: https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350 github.com: https://github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/[email protected]