---
title: "CVE-2026-91048: Apache Karaf - Privilege Escalation & Remote Code Execution"
description: "Apache Karaf contains a privilege escalation to remote code execution caused by lack of ACL rules for jdbc:* and jms:* shell commands, letting authenticated users with viewer role execute arbitrary code via crafted JDBC URLs, exploit requires authenticated shell session with viewer role."
url: https://panop.io/threat-heartbeat/CVE-2026-91048/
---

# CVE-2026-91048 Apache Karaf - Privilege Escalation & Remote Code Execution

Apache Karaf contains a privilege escalation to remote code execution caused by lack of ACL rules for jdbc:\* and jms:\* shell commands, letting authenticated users with viewer role execute arbitrary code via crafted JDBC URLs, exploit requires authenticated shell session with viewer role.

CVSS base score 9.8 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.54% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-91048)

## Details

Type

Privilege Escalation

Impact

Remote Code Execution, Privilege Escalation

CVSS vector

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

Published

29 September 2026

Updated

15 October 2026

Weakness

[CWE-862](https://cwe.mitre.org/data/definitions/862.html)

## Vendor fix

Apply patches or updates that enforce ACL rules for jdbc:\* and jms:\* shell commands or upgrade to the latest version.

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-2026-91048](https://nvd.nist.gov/vuln/detail/CVE-2026-91048)
- [https://lists.apache.org/thread/ph3867mxh2tft75w0o1hpn10f5mbmw32](https://lists.apache.org/thread/ph3867mxh2tft75w0o1hpn10f5mbmw32)
- [http://www.openwall.com/lists/oss-security/2026/09/28/9](http://www.openwall.com/lists/oss-security/2026/09/28/9)

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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

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