CVE-2026-89026
Issabel Framework Hard-coded JWT Key RCE via pbxapi/manager/originate
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-321 |
| Vendor | issabel foundation |
| Product | issabel framework |
| Published | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Issabel Foundation / Issabel Framework
0 < b97dbaf0b71c1c36f841e672b664afbeb02773bd
References
Credits
🔍 The Shadowserver Foundation