VULNERABILITY INTELLIGENCE

CVE-2026-44237

CVSS score8.1 HIGH
EPSS probability2.70%
CISA KEVNot currently listed
Published2026-05-29
Last modified2026-07-21
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Description

FreePBX is an open source IP PBX. Prior to 17.0.8, the FreePBX api module's OAuth2 implementation does not sufficiently validate client credentials during token issuance. Knowledge of a valid client_id is required. The validateClient() method in ClientRepository.php unconditionally returns true, allowing any party with knowledge of a valid client_id to obtain OAuth2 access tokens without providing the correct client_secret. This vulnerability is fixed in 17.0.8.

Weakness classification

  • security-advisories@github.com: CWE-1390

Primary references