What is CVE-2026-65827?

CVE-2026-65827 is a medium-severity vulnerability in Docmost, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-09-24.

How severe is CVE-2026-65827?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Docmost

CVE-2026-65827

Docmost is open-source collaborative wiki and documentation software. From 0.21.0 until 0.95.0, any authenticated workspace member with edit rights to a space can upload an archive to the page-import feature whose ZIP extraction routine does not limit total uncompressed size, per-entry size, or entry count. The extractor writes entries to the server temp directory and automatically extracts one nested ZIP, allowing an outer upload within the default 200 MB limit to expand by multiple GB. The resulting disk exhaustion can crash the import worker and degrade or take down the instance for all tenants. This issue is fixed in version 0.95.0.

Vulnerability class: DoS (Denial of Service)

Published 2026-09-24 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Docmost — versions >= 0.21.0, < 0.95.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-65827?: CVE-2026-65827 is a medium-severity vulnerability in Docmost, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-09-24.
How severe is CVE-2026-65827?: Medium severity. CVSS v3 base score is 6.5 out of 10.