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5.3

GROWI lets logged‑in users access others' bookmarks

CVE-2026-53620 · published 2 months ago
Summary

The GROWI collaboration tool has a flaw in its bookmark folder feature that lets a signed‑in user bypass normal checks and view, change, or delete another person's saved bookmarks. This could expose private links or disrupt other users' work. Apply the vendor's update or patch as soon as possible to close the gap.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
growi, inc. growi <= v8.0.0
Original advisory text
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, ta...
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.3 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-639Authorization Bypass Through User-Controlled Key
Timeline
Published31 Aug 2026
Updated3 Nov 2026
First seen31 Aug 2026
Sources
CVE-2026-53620 · NVD
CVE-2026-53620 · MITRE
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