---
id: CVE-2026-80191
title: >-
  GROWI applies its page-viewer permission check to attachment requests only
  when the request carries an authenticated user
summary: >-
  GROWI applies its page-viewer permission check to attachment requests only
  when the request carries an authenticated user. retrieveAttachmentFromIdParam
  in apps/app/src/server/routes/attachment/get.ts guards the check with a
  condition re…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-862
published: '2026-08-26'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:43:32.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80191'
references:
  - url: 'https://github.com/growilabs/growi'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/growilabs/growi/blob/v8.0.1/apps/app/src/server/routes/attachment/get.ts
    label: disclosure@vulncheck.com
  - url: 'https://github.com/growilabs/growi/pull/11756'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/growilabs/growi/releases/tag/v8.0.2'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/growi-before-8.0.2-missing-authorization-on-attachment-retrieval-for-unauthenticated-requests
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00482
epssPercentile: 0.38958
ingestedAt: '2026-09-24T20:51:40.229Z'
---

## Overview

GROWI applies its page-viewer permission check to attachment requests only when the request carries an authenticated user. retrieveAttachmentFromIdParam in apps/app/src/server/routes/attachment/get.ts guards the check with a condition requiring the user to be non-null, so a request that carries no session skips the check entirely and the handler returns the file. The routes reached this way, /attachment/:id and /download/:id, take the attachment identifier from the path, so an unauthenticated caller who has an attachment identifier receives the file regardless of whether the page owning it is private and regardless of whether that caller would be permitted to view the page. Identifiers can be retained by a user whose access was later removed, or recovered from anywhere the identifier was previously exposed. Version 8.0.2 runs the check for authenticated and unauthenticated requests alike, skipping it only where a valid share link has already bound the requested file to that link's page.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.