Vulnerability · Published Sep 24, 2026 · Assigned by GitHub_M

CVE-2026-48073Docmost: Page export can include restricted same-space attachments through forged attachmentId

Medium 4.3

In plain English

A medium-severity authorization bypass via user-controlled key in docmost from docmost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.2%top 91.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
docmost	docmost	>= 0.70.0, < 0.80.1

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

https://github.com/docmost/docmost/security/advisories/GHSA-rxm9-xp9h-4c84 x_refsource_CONFIRM
https://github.com/docmost/docmost/commit/a573acedd0317f3472cb0f8b95f6aa15315312e5 x_refsource_MISC
https://github.com/docmost/docmost/releases/tag/v0.80.1 x_refsource_MISC