ApostropheCMS: Unauthenticated unbounded multipart upload → disk-exhaustion DoS

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-113656
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-20 17:17:36 UTC
Updated2026-10-20 19:53:10 UTC
DescriptionApostropheCMS 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.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Problem Types: CWE-770 | CWE-770 CWE-770: Allocation of Resources Without Limits or Throttling

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apostrophecms Apostrophe affected < 4.33.0 Not specified
CNA @apostrophecms Form affected < 1.5.5 Not specified

References

ReferenceSourceLinkTags
github.com/apostrophecms/apostrophe/security/advisories/GHSA-89mh-mm8c-mv7f [email protected] github.com
github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25d... [email protected] github.com
github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25... [email protected] github.com
github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/[email protected] [email protected] github.com
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