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9.9
CVE-2026-77240: WACRM lets users change roles and view other tenants' data
CVE-2026-77240 · published 10 days ago
Summary
The WACRM CRM template for WhatsApp (versions up to 0.7.0) allows a logged‑in user to change their own role and account identifier, which can let them act as an administrator or move into another customer's space. It also lets a non‑member read private knowledge‑base entries from other customers. Update to the latest version of WACRM to apply the fix.
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
| Vendor | Product | Affected versions |
|---|---|---|
| arnasdon | wacrm | <= 0.7.0 |
Original advisory text
WACRM: Database-layer authorization bypasses
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.
References
- https://github.com/ArnasDon/wacrm/security/advisories/GHSA-fg5p-2qc3-jmxr
- https://github.com/ArnasDon/wacrm/pull/350
- https://github.com/ArnasDon/wacrm/commit/e01f7ed37184f972ace8fb2da5c3e37e56a6050...
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77240... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-77240 Vendor Advisory
Severity
9.9
Critical
CVSS 3.1: 9.9 (MITRE)
Exploitation
EPSS <1%
Type
CWE-639Authorization Bypass Through User-Controlled Key
Timeline
Published18 Sep 2026
Updated27 Sep 2026
First seen18 Sep 2026
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