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CVE

CVE-2026-89026

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

CVE-2026-89026

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

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89026.json, https://nvd.nist.gov/vuln/detail/CVE-2026-89026, https://www.vulncheck.com/advisories/issabel-pbx-hard-coded-jwt-key-rce-via-pbxapi-manager-originate, https://github.com/IssabelFoundation/framework/commit/b97dbaf0b71c1c36f841e672b664afbeb02773bd, https://github.com/IssabelFoundation/framework

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00685%
EPSS Percentile
0.51244%
Introduced Version
0
Fix Available
b97dbaf0b71c1c36f841e672b664afbeb02773bd

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