CVE-2025-55739

api: Shared OAuth Signing Key Between Different Instances

api is a module for FreePBX@, which is an open source GUI that controls and manages Asterisk© (PBX). In versions lower than 15.0.13, 16.0.2 through 16.0.14, 17.0.1 and 17.0.2, there is an identical OAuth private key used across multiple systems that installed the same FreePBX RPM or DEB package. An attacker with access to the shared OAuth private key could forge JWT tokens, bypass authentication, and potentially gain full access to both REST and GraphQL APIs. Systems with the "api" module enabled, configured and previously activated by an administrator for remote inbound connections may be affected. This issue is fixed in versions 15.0.13, 16.0.15 and 17.0.3.

We have discovered 2 live websites that are affected by CVE-2025-55739.

Run a Free Instant Scan



Affected Software

Product  FreePBX
Category Miscellaneous
Vulnerable Domains2 live websites (100% of FreePBX install base)
Vulnerable Versions
  • from 0 through 15.0.13
  • from 16.0.2 through 16.0.15
  • from 17.0.1 through 17.0.3
Vulnerable Versions Count1 versions ( 100% of all versions)


Common Weakness Enumeration

CWE-798 Use of Hard-coded Credentials



Details

  • Published - Sep 4, 2025
  • Updated - Sep 5, 2025

Website Distribution by Country

Number of websites using CVE-2025-55739
United States1 websites


Canada1 websites

Website Distribution by TLD

Number of websites using CVE-2025-55739
.ca1 websites
.org1 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2025-55739

Top websites that are affected by CVE-2025-55739. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
**********.ca Canada**,***,***
***.********.org United States**,***,***
See full domain list

FAQ

CVE-2025-55739 is Use of Hard-coded Credentials in FreePBX
A total of 2 websites have been identified as vulnerable to CVE-2025-55739, based on global website indexing conducted by WebTechSurvey.
The FreePBX is affected by the CVE-2025-55739 vulnerability.
FreePBX versions up to 17.0.3 are vulnerable to CVE-2025-55739.
CVE-2025-55739 is resolved in version 17.0.3 of FreePBX.