CVE-2026-34213

5.4 mediumEPSS 0.2%

Medium (5.4) in docmost docmost. EPSS 0.2% chance of exploitation in the next 30 days.

Docmost is open-source collaborative wiki and documentation software. Starting in version 0.3.0 and prior to version 0.71.0, improper authorization in Docmost allows a low-privileged authenticated user to overwrite another page's attachment within the same workspace by supplying a victim `attachmentId` to `POST /api/files/upload`. This is a remote integrity issue requiring no victim interaction. Version 0.71.0 contains a patch.

Severity

CVSS 3.1

5.4 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-31)
CWE: CWE-639
Published: 2026-04-14
Modified: 2026-07-24
Record from: the NVD, synced 2026-10-19

Affected

docmost:docmost

References

https://github.com/docmost/docmost/security/advisories/GHSA-89fp-2hch-j9gp

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