---
title: "CVE-2026-91006: Apache Karaf - Command Injection"
description: "Apache Karaf contains a command injection vulnerability caused by unquoted caller-supplied javaOpts in InstanceServiceImpl command line construction, letting attackers execute arbitrary OS commands as the Karaf process user, exploit requires access to instance management commands or JMX operations."
url: https://panop.io/threat-heartbeat/CVE-2026-91006/
---

# CVE-2026-91006 Apache Karaf - Command Injection

Apache Karaf contains a command injection vulnerability caused by unquoted caller-supplied javaOpts in InstanceServiceImpl command line construction, letting attackers execute arbitrary OS commands as the Karaf process user, exploit requires access to instance management commands or JMX operations.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

1.14% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-91006)

## Details

Type

Command Injection

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

28 September 2026

Updated

15 October 2026

Weakness

[CWE-78](https://cwe.mitre.org/data/definitions/78.html)

## Vendor fix

Restrict access to instance management commands and JMX operations, set karaf.secured.command.compulsory.roles=admin, and ensure javaOpts input is trusted or properly sanitized.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-91006](https://nvd.nist.gov/vuln/detail/CVE-2026-91006)
- [https://lists.apache.org/thread/olzy0yjw82b20w59vonfjr1x7v5yzocr](https://lists.apache.org/thread/olzy0yjw82b20w59vonfjr1x7v5yzocr)
- [http://www.openwall.com/lists/oss-security/2026/09/28/3](http://www.openwall.com/lists/oss-security/2026/09/28/3)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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