What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-24 · updated 2026-09-24
• Weakness: CWE-639

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

• docmost: from 0.70.0, < 0.80.1

References

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

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