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NVD Vulnerability Details :

CVE-2026-44237

Undergoing Analysis

Source-security-advisories@github.com

Published At-29 May, 2026 | 14:16

Updated At-29 May, 2026 | 15:06

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	4.0	7.6	HIGH	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Type: Secondary

Version: 4.0

Base score: 7.6

Base severity: HIGH

Vector:

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE ID	Type	Source
CWE-1390	Primary	security-advisories@github.com

CWE ID: CWE-1390

Type: Primary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/FreePBX/security-reporting/security/advisories/GHSA-vgjf-4h63-8vcc	security-advisories@github.com	N/A

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

Source: security-advisories@github.com

Resource: N/A

CISA Catalog

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Change History