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TI-2026-81645 Aliases CVE-2026-109848GHSA-j29w-qwmj-w2j8

Authorization bypass in GROWI tag and page update APIs

Priority LOW 11CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

GROWI, Inc.'s GROWI from v4.5.5 through v8.0.6 contains an authorization bypass in its tag update API and page update API, caused by improper use of a user-controlled key (CWE-639). An attacker who can log in can obtain the contents of pages they lack read permission for and save them to pages they can edit.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

GROWI contains an authorization bypass vulnerability in its tag update API and the page update API due to improper use of a user-controlled key. By exploiting this vulnerability, an attacker who can log in to the product may obtain the contents of pages without the required read permission and save them to pages that the attacker can edit.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00222 12th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GROWI, Inc.GROWIv4.5.5 – v8.0.6—No fix listedCNA
  • GROWI VendorGROWI, Inc. Affected v4.5.5 – v8.0.6 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for GROWI.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-109848
  2. 2026-10-28 Alias added: GHSA-j29w-qwmj-w2j8
  3. 2026-11-04 CISA SSVC decision points changed

References

Other 3

  • TI-2026-55432 GROWI before 8.0.2 Missing Authorization on Attachment Retrieval for Unauthenticated Requests CVSS 4.0HIGH 8.7
  • TI-2026-29679 Regular expression denial of service in GROWI, Inc. GROWI CVSS 4.0HIGH 8.7
  • TI-2026-30347 Path traversal in GROWI, Inc. GROWI CVSS 4.0HIGH 8.6
  • TI-2026-20258 Missing authorization in GROWI, Inc. GROWI CVSS 4.0HIGH 8.7
  • TI-2026-81649 GROWI missing authorization check in collaborative editing CVSS 4.0MEDIUM 6.9
  • TI-2026-67628 Improper access control in GROWI exposes files on non-public pages CVSS 4.0MEDIUM 6.9
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences