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TI-2026-75442 Aliases CVE-2026-111656GHSA-wqfw-mf45-5858

Cross-tenant IDOR in ChatWiki exposes other tenants' form filters

Priority LOW 23CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
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

ChatWiki through 2.9.6 from zhimaAi contains an insecure direct object reference flaw (CWE-639) in its form filter management endpoints. An authenticated user can supply arbitrary form_id values to read other tenants' filter rules and overwrite their filter sort order.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

ChatWiki through 2.9.6 contains an insecure direct object reference vulnerability that allows authenticated users to access another tenant's form filters by supplying arbitrary form_id values. Attackers can send sequential form_id values to getFormFilterList, getFormFilterInfo and updateFormFilterSort to read filter rules and overwrite another tenant's filter sort order.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00223 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
zhimaAichatwikiup to 2.9.6—No fix listedCNA
  • chatwiki VendorzhimaAi Affected up to 2.9.6 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for ChatWiki.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-111656
  2. 2026-10-16 Alias added: GHSA-wqfw-mf45-5858
  3. 2026-10-18 CISA SSVC decision points changed

References

Advisory 1

Other 2

  • TI-2026-85961 Cross-tenant fast command modification in ChatWiki CVSS 4.0MEDIUM 5.3
  • TI-2026-86087 Missing authentication in ChatWiki exposes other tenants' documents CVSS 4.0HIGH 8.7
  • TI-2026-85962 Cross-tenant form field modification in ChatWiki via IDOR CVSS 4.0MEDIUM 5.3

Sources

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