# CVE-2026-84218

## Summary

- **CVE ID:** CVE-2026-84218
- **Severity:** HIGH
- **CVSS Score:** 8.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-184
- **Published:** Sep 1, 2026
- **Last Modified:** Sep 2, 2026

## Description

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.

## Affected Products

No affected products listed.

## References

- [CNA](https://github.com/jolokia/jolokia/issues/1049)
- [CNA](https://access.redhat.com/security/cve/CVE-2026-84218)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2526752)
- [CNA](https://github.com/advisories/GHSA-c9ff-59g8-m36q)
- [CNA](https://jolokia.org/#jolokia_2_6_2_released_with_security_fixes)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.88%
- **EPSS Percentile:** 57.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._