What is CVE-2026-48073?

CVE-2026-48073 is a medium-severity vulnerability in Docmost, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-09-24.

How severe is CVE-2026-48073?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Docmost

CVE-2026-48073

Docmost is open-source collaborative wiki and documentation software. From 0.70.0 until 0.80.1, a low-privileged authenticated user who can edit an exportable page can embed a forged attachmentId that belongs to a restricted page in the same space. Exporting the attacker-controlled page with includeAttachments=true causes the page export flow to read the restricted attachment from storage and include it in the returned ZIP archive even though direct file download denies access. This issue is fixed in version 0.80.1.

Vulnerability class: IDOR (Insecure Direct Object Reference)

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

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

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 >= 0.70.0, < 0.80.1

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

Frequently asked questions

What is CVE-2026-48073?: CVE-2026-48073 is a medium-severity vulnerability in Docmost, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-09-24.
How severe is CVE-2026-48073?: Medium severity. CVSS v3 base score is 4.3 out of 10.