Issabel Framework Hard-coded JWT Key RCE via pbxapi/manager/originate (CVE-2026-89026) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89026

Issabel Framework Hard-coded JWT Key RCE via pbxapi/manager/originate

Answer in brief

CVE-2026-89026 records a Unknown severity vulnerability in Issabel Framework Hard-coded JWT Key RCE via pbxapi/manager/originate. The current sources do not mark it as known exploited. The current feed maps Issabel Foundation/Issabel Framework (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 15, 2026Updated Sep 15, 2026Source checked Sep 15, 2026First seen by HOL Sep 15, 2026Material review Sep 15, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Issabel Foundation/Issabel Framework (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Issabel Foundation/Issabel Frameworkgeneric	>=0 <b97dbaf0b71c1c36f841e672b664afbeb02773bd	b97dbaf0b71c1c36f841e672b664afbeb02773bd

Recommended response

Check inventory. Check lockfiles and deployed manifests for Issabel Foundation/Issabel Framework.
Review the reported fix. Update Issabel Foundation/Issabel Framework to b97dbaf0b71c1c36f841e672b664afbeb02773bd if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 15, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.