CVE-2026-53620
Received Received - Intake

Authorization Bypass in GROWI via Bookmark Folder API

Publication date: 2026-08-31

Last updated on: 2026-08-31

Assigner: JPCERT/CC

Description
GROWI contains a vulnerability with an authorization bypass through user-controlled key in the bookmark folder APIs. If this vulnerability is exploited, an authenticated attacker could retrieve, tamper with, and/or delete the other user's bookmark data.

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Meta Information

Published
2026-08-31
Last Modified
2026-08-31
Generated
2026-08-31
AI Q&A
2026-08-31
EPSS Evaluated
N/A
NVD
CVE-2026-53620
EUVD
EUVD-2026-68371

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
growi growi to 8.0.1 (exc)
growi growi From 8.0.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

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Executive Summary

GROWI has an authorization bypass vulnerability in its bookmark folder APIs. An authenticated attacker can manipulate user-controlled keys to retrieve, tamper with, or delete other users' bookmark data.

Detection Guidance

Check GROWI version with commands like 'npm list growi' or 'docker inspect <container_name>'. If version is v8.0.0 or earlier, the system is vulnerable. Monitor API logs for unauthorized access attempts to bookmark endpoints.

Impact Analysis

If exploited, this vulnerability allows attackers to access and modify your bookmarks without authorization. This could lead to data loss, unauthorized changes, or exposure of sensitive information stored in bookmarks.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of user data, potentially violating GDPR's data integrity and confidentiality requirements or HIPAA's safeguards for protected health information.

Mitigation Strategies

Update GROWI to v8.0.1 or later immediately. Restrict access to bookmark APIs and review user permissions. Disable guest access if enabled to prevent unauthenticated exploitation.

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