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.
CVE-2025-55210
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 82% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 21.8%
- KEV
- Not listed
Published
February 12, 2026
Last Modified
February 27, 2026
Advisory Details (3)
Auto-updated Jun 12, 2026Privilege Escalation Error in GraphQL Allows Authenticated Users to Access Additional Scopes · Advisory · FreePBX/security-reporting · GitHub
https://github.com/FreePBX/security-reporting/security/advisories/GHSA-gvgh-p7wj-76cfcommit d66786634e7e (FreePBX/api)
Fix landed in FreePBX/api commit d66786634e7e — awaiting tagged release
https://github.com/FreePBX/api/commit/d66786634e7e7d3eedcb4d0931b32c415ba6e9efcommit bc6f7d72063c (FreePBX/api)
Fix landed in FreePBX/api commit bc6f7d72063c — awaiting tagged release
https://github.com/FreePBX/api/commit/bc6f7d72063cffb18babb6559fa351046d7ad19bWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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- 2026-05-29 13:59 UTCEG score recompute
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