CVE-2026-44237

EUVD-2026-33300

29.05.2026, 14:16

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	8.1 HIGH	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 10%

Affected Products (NVD)

Vendor	Product	Version
sangoma	freepbx	𝑥 < 17.0.8

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-1390 - Weak Authentication
The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.

References

https://github.com/FreePBX/security-reporting/security/advisories/GHSA-vgjf-4h63-8vcc