CVE-2020-11980Network attack vector

Authenticated SSRF via permissive JMX getter ACL

Published Jun 12, 2020 · Updated Aug 4, 2024

SSRF in Apache Karaf 4.2.8 and earlier allows remote authenticated users to make server-side requests through JMX. The global etc/jmx.acl.cfg grants the viewer role access to get* methods, so MLet's getMBeansFromURL fetches an attacker-chosen URL and registers the returned MBean. A viewer account and reachable JMX service are required; invocation can access network resources from the server and pollute its MBean registry, but the viewer cannot invoke the loaded MBean.

CVSS severity6.3
Medium
EPSS probability1.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Apache Karaf 4.2.8 and earlier allows remote authenticated users to make server-side requests through JMX. The global etc/jmx.acl.cfg grants the viewer role access to get* methods, so MLet's getMBeansFromURL fetches an attacker-chosen URL and registers the returned MBean. A viewer account and reachable JMX service are required; invocation can access network resources from the server and pollute its MBean registry, but the viewer cannot invoke the loaded MBean.

The record

CVE
CVE-2020-11980
Published
Jun 12, 2020
Updated
Aug 4, 2024
Vendor
The Apache Software Foundation
Product
Apache Karaf
Classifications
CWE-918, CAPEC-664
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Apache Karaf up to 4.2.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Karafversion=Apache Karaf up to 4.2.8

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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