CVE-2026-89026Network attack vectorHinoki check available

Unauthenticated command execution via shared JWT signing key

Published Sep 15, 2026 · Updated Sep 15, 2026

Hard-coded cryptographic key use in Issabel Foundation Issabel Framework before b97dbaf allows remote attackers to execute OS commands. The pbxapi index.php file assigns the same HS256 JWT signing secret on every installation, so attackers can forge bearer tokens accepted by the API. Unauthenticated network access to pbxapi is sufficient; a forged token can pass the manager originate endpoint an Asterisk System application and run commands as the Asterisk user.

CVSS severityUnavailable
Unscored
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Hard-coded cryptographic key use in Issabel Foundation Issabel Framework before b97dbaf allows remote attackers to execute OS commands. The pbxapi index.php file assigns the same HS256 JWT signing secret on every installation, so attackers can forge bearer tokens accepted by the API. Unauthenticated network access to pbxapi is sufficient; a forged token can pass the manager originate endpoint an Asterisk System application and run commands as the Asterisk user.

The record

CVE
CVE-2026-89026
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Issabel Foundation
Product
Issabel Framework
Classifications
T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <b97dbaf0b71c1c36f841e672b664afbeb02773bd

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Issabel Foundation · Issabel Frameworkversion=0 <b97dbaf0b71c1c36f841e672b664afbeb02773bd

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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