Medium severity · published Sep 1, 2026
CVE-2026-84204
GROWI through 8.0.2 Missing Authorization on apiv3 Attachment Retrieval
6.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
growi · growilabs
through 8.0.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-84204
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-84204
github.com
https://github.com/growilabs/growi
github.com
https://github.com/growilabs/growi/blob/v8.0.2/apps/app/src/server/routes/apiv3/attachment.js
github.com
https://github.com/growilabs/growi/commit/d298e0b1dbbf568c99db657fa0f7e90f72ddc59b
github.com
https://github.com/growilabs/growi/pull/11810
www.vulncheck.com
https://www.vulncheck.com/advisories/growi-through-8.0.2-missing-authorization-on-apiv3-attachment-retrieval
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GROWI through 8.0.2 Authorization Bypass Through User-Controlled Key on apiv3 Revision Retrieval