jolokia-service-jsr160 Incomplete target JMX Service URL deny list handling for user-controlled input

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2026-84218: 0.95% estimated exploitation activity in the next 30 days; percentile 61.26 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

A flaw was found in Jolokia's JSR-160 proxy functionality where insufficient validation of client-controlled JMX service URLs allows a bypass of the denylist introduced to mitigate CVE-2018-1000130. The proxy accepts a target.url value from a Jolokia POST request and passes it to JMXServiceURL and JMXConnectorFactory for establishing the remote JMX connection. The existing denylist only rejects URLs matching service:jmx:rmi:///jndi/ldap:., which can be bypassed using alternative valid JMX service URL forms, including ldaps:// schemes or LDAP URLs with a non-empty JMX host component. These URLs are accepted as valid JMXServiceURL objects and can cause the Jolokia agent JVM to perform a JNDI lookup against an attacker-controlled LDAP endpoint. This can result in server-side request forgery (SSRF), forwarding of supplied JMX credentials to the remote endpoint, and potentially remote code execution depending on the classes and configuration available in the target JVM.

Published by the source

1 Sep 2026, 15:31 UTC

Last modified by the source

7 Oct 2026, 18:15 UTC

Source last checked

26 Oct 2026, 16:58 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-c9ff-59g8-m36q

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-c9ff-59g8-m36q

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# Patch Next advisory brief: CVE-2026-84218

Advisory: jolokia-service-jsr160 Incomplete target JMX Service URL deny list handling for user-controlled input
IDs: CVE-2026-84218, GHSA-c9ff-59g8-m36q
Record: https://patchnext.com/advisories/cve-2026-84218 (revision 2, source checked 26 Oct 2026, 16:58 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.jolokia:jolokia-service-jsr160 2.6.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.jolokia:jolokia-service-jsr160: affected < 2.6.2; fixed in 2.6.2

## Suggested inspection (read-only)
- Maven org.jolokia:jolokia-service-jsr160: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.jolokia:jolokia-service-jsr160.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-c9ff-59g8-m36q (OSV record GHSA-c9ff-59g8-m36q lists affected ranges: Maven org.jolokia:jolokia-service-jsr160 >=0 <2.6.2 (fixed))
- Verified: https://github.com/advisories/GHSA-c9ff-59g8-m36q (GitHub-reviewed advisory GHSA-c9ff-59g8-m36q lists affected ranges: Maven org.jolokia:jolokia-service-jsr160 >=0 <2.6.2)

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