Vulnerability · Published Sep 1, 2026 · Assigned by VulnCheck
CVE-2026-84204GROWI through 8.0.2 Missing Authorization on apiv3 Attachment Retrieval
Medium 6.5
In plain English
A medium-severity missing authorization in growi from growilabs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 64.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
GROWI contains an access control vulnerability in the GET /_api/v3/attachment/:id endpoint that fails to validate page access permissions. Authenticated attackers can retrieve attachment metadata from pages they cannot view by supplying known attachment identifiers.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://github.com/growilabs/growi product
- https://github.com/growilabs/growi/pull/11810 patch, issue-tracking
- https://github.com/growilabs/growi/commit/d298e0b1dbbf568c99db657fa0f7e90f72ddc59b patch
- https://github.com/growilabs/growi/blob/v8.0.2/apps/app/src/server/routes/apiv3/attachment.js technical-description
- VulnCheck Advisory: GROWI through 8.0.2 Missing Authorization on apiv3 Attachment Retrieval third-party-advisory