Medium severity · published Oct 20, 2026
CVE-2026-112955
ApostropheCMS: Import archives can exhaust server storage and deny service
6.5
CVSS
0.5%
EPSS
No
On KEV
Description
ApostropheCMS is an open-source Node.js content management system. Prior to 3.7.1 of the import-export module, an authenticated importer can submit archives whose decompressed bytes, entry count, and entry sizes are not bounded before document-type authorization, and extraction or parsing failures can leave staging and extracted artifacts without unconditional cleanup. The already-hardened pre-authentication and write-error paths are separate, and current end-to-end denial-of-service impact from this residual path remains subject to maintainer validation. This issue is fixed in version 3.7.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AP
apostrophe · apostrophecms
< 4.34.0 · source: vendor
IM
import-export · @apostrophecms
< 3.7.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-112955
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-112955
github.com
https://github.com/apostrophecms/apostrophe/commit/06e4b377f3c360f9e89c32dccd7e505ad5ddf498
github.com
https://github.com/apostrophecms/apostrophe/commit/40b989b1a9dd23d30029b8ce7668634265cfe5ea
github.com
https://github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/import-export@3.7.1
github.com
https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-9g7p-m758-rp72
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