CVE-2025-55210

LOW EPSS 21.3%
Published Feb 12, 20264mo ago · Modified Jun 17, 20261w ago
2.0 CVSS 4.0
Low
Find Similar
Published Feb 12, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

Description

FreePBX is an open-source web-based graphical user interface (GUI) that manages Asterisk. Prior to 17.0.5 and 16.0.17, FreePBX module api (PBX API) is vulnerable to privilege escalation by authenticated users with REST/GraphQL API access. This vulnerability allows an attacker to forge a valid JWT with full access to the REST and GraphQL APIs on a FreePBX that they've already connected to, possibly as a lower privileged user. The JWT is signed using the api-oauth.key private key. An attacker can generate their own token if they possess this key (e.g., by accessing an affected instance), and specify any scopes they wish (e.g., rest, gql), bypassing traditional authorization checks. However, FreePBX enforces that the jti (JWT ID) claim must exist in the database (api_access_tokens table in the asterisk MySQL database) in order for the token to be accepted. Therefore, the attacker must know a jti value that already exists on the target instance. This vulnerability is fixed in 17.0.5 and 16.0.17.

CVSS Details

Base Score
2.0
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/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
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction A
Scope X

Threat Intelligence

EPSS Exploit Probability
21.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-270

Affected Products 2

VendorProductVersionRange
sangomafreepbx*≥16.0.2  –  <16.0.17
sangomafreepbx*≥17.0.1  –  <17.0.5

References 4

  • github.com https://github.com/FreePBX/api/commit/bc6f7d72063cffb18babb6559fa351046d7ad19b
    Patch
  • github.com https://github.com/FreePBX/api/commit/c16a3a79b83382fb4884e51174882ed635637002
    Patch
  • github.com https://github.com/FreePBX/api/commit/d66786634e7e7d3eedcb4d0931b32c415ba6e9ef
    Patch
  • github.com https://github.com/FreePBX/security-reporting/security/advisories/GHSA-gvgh-p7wj-76cf
    Vendor Advisory

Remediation

  • github.com https://github.com/FreePBX/api/commit/bc6f7d72063cffb18babb6559fa351046d7ad19b
    Patch
  • github.com https://github.com/FreePBX/api/commit/c16a3a79b83382fb4884e51174882ed635637002
    Patch
  • github.com https://github.com/FreePBX/api/commit/d66786634e7e7d3eedcb4d0931b32c415ba6e9ef
    Patch