CRITICAL 9.3 NVD
CVE-2026-89026
The Issabel Framework, the web framework supporting Issabel PBX software, before commit b97dbaf contains a hard-coded HS256 JWT signing key in the pbxapi index.
The Issabel Framework, the web framework supporting Issabel PBX software, before commit b97dbaf contains a hard-coded HS256 JWT signing key in the pbxapi index.php file that is identical across every installation, allowing unauthenticated remote attackers to forge valid bearer tokens. Attackers can use the forged token to call the manager originate endpoint with the System application parameter, causing Asterisk to execute arbitrary OS commands as the Asterisk user. Exploitation evidence was first observed by the Shadowserver Foundation on 2026-09-09.
References
- https://github.com/IssabelFoundation/framework/commit/b97dbaf0b71c1c36f841e672b664afbeb027
- https://www.vulncheck.com/advisories/issabel-pbx-hard-coded-jwt-key-rce-via-pbxapi-manager
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-09-15 via NVD.
Risk Timeline
CVE Disclosed2026-09-15 · -1 days ago
Remediation Resources
vulnfeed aggregates 14340 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.