CVE-2026-111656 ChatWiki through 2.9.6 Cross-Tenant IDOR via Form Filter Management Endpoints
Authenticated users can access and modify other tenants' form filters by manipulating form_id parameters in ChatWiki.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-111656?
CVE-2026-111656 is a medium-severity missing authorization vulnerability in zhimaAi chatwiki, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-639
Which versions are affected by CVE-2026-111656?
How do I fix CVE-2026-111656?
No fix has been published for CVE-2026-111656 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-111656 being exploited?
There is no known exploitation of CVE-2026-111656 in the wild and no public exploit code.
Sources
Also known as GHSA-wqfw-mf45-5858.