CVE-2026-77240 WACRM: Database-layer authorization bypasses
Authenticated users can bypass row-level security to self-promote roles, access other tenants' data, or modify tenant resources in WACRM.
- 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-2026-77240?
CVE-2026-77240 is a critical missing authorization vulnerability in ArnasDon wacrm, published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
WACRM is a self-hostable CRM template for WhatsApp. In version 0.7.0 and earlier, the profiles_update row-level security policy in supabase/migrations/017_account_sharing.sql permits authenticated users to modify their own account_role and account_id, allowing a viewer to self-promote or move into another tenant and then access or modify tenant resources. Separately, match_ai_knowledge_fts and match_ai_knowledge_semantic in supabase/migrations/030_ai_knowledge.sql run as SECURITY DEFINER, accept a caller-controlled p_account_id, and omit an is_account_member check, allowing an authenticated non-member to read another tenant's knowledge-base chunks. This vulnerability is fixed with commit e01f7ed37184f972ace8fb2da5c3e37e56a6050f.
Weakness: CWE-639
Which versions are affected by CVE-2026-77240?
How do I fix CVE-2026-77240?
No fix has been published for CVE-2026-77240 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-2026-77240 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-77240 exists.
Sources
Also known as GHSA-fg5p-2qc3-jmxr.