CVE•Published 2026-05-29•Modified 2026-06-01•1 article on news•5 live references•NVD data
CVE-2026-44237Sangoma · Freepbx
Vulnerability data via NVD (ingested)
CVSS v3.1
8.1
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
—
Weaknesses (CWE)
Description
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.
Timeline
Published 2026-05-29
Modified 2026-06-01
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-44237Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Sangoma Freepbx"All exposed Sangoma Freepbx instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Freepbx"HTTP body or banner mentions "Freepbx" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-44237Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-44237Censys host search filtered to this CVE id.
grep.app
CVE-2026-44237Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-44237GitHub code search for direct mentions.
Google dork
"CVE-2026-44237" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-44237 on GitHub.