23 Oct 2026 15:48:27 UTC
Issabel Framework Hard-coded JWT Key RCE via pbxapi/manager/originate
cve-program · CVE-2026-89026 · Published
CVE-2026-89026
Issabel Framework Hard-coded JWT Key RCE via pbxapi/manager/originate
CVSS 4.0 9.3 CRITICALCVSS 3.1 9.8 CRITICALCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-89026
PublishedThe 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.
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