CVE-2020-1960

Credential disclosure via JMXRMI registry rebinding

Published May 14, 2020 · Updated Aug 4, 2024

JMX injection in Apache Flink 1.1.0 through 1.9.2 and 1.10.0 allows local users to intercept JMX sessions and read transferred data. JMXReporter accepts a crafted request that rebinds its configured JMXRMI registry to an attacker-controlled endpoint. Exploitation requires local access to the host and JMX port; the resulting interception exposes credentials and other JMX data without reported integrity or availability impact.

CVSS severity4.7
Medium
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

JMX injection in Apache Flink 1.1.0 through 1.9.2 and 1.10.0 allows local users to intercept JMX sessions and read transferred data. JMXReporter accepts a crafted request that rebinds its configured JMXRMI registry to an attacker-controlled endpoint. Exploitation requires local access to the host and JMX port; the resulting interception exposes credentials and other JMX data without reported integrity or availability impact.

The record

CVE
CVE-2020-1960
Published
May 14, 2020
Updated
Aug 4, 2024
Vendor
The Apache Software Foundation
Product
Apache Flink
Classifications
CWE-74, T1557
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 14, 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 Flink 1.1.0 to 1.1.5, 1.2.0 to 1.2.1, 1.3.0 to 1.3.3, 1.4.0 to 1.4.2, 1.5.0 to 1.5.6, 1.6.0 to 1.6.4, 1.7.0 to 1.7.2, 1.8.0 to 1.8.3, 1.9.0 to 1.9.2, 1.10.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Flinkversion=Apache Flink 1.1.0 to 1.1.5, 1.2.0 to 1.2.1, 1.3.0 to 1.3.3, 1.4.0 to 1.4.2, 1.5.0 to 1.5.6, 1.6.0 to 1.6.4, 1.7.0 to 1.7.2, 1.8.0 to 1.8.3, 1.9.0 to 1.9.2, 1.10.0

Published CVSS scores

1.9NIST NVDAV:L/AC:M/Au:N/C:P/I:N/A:N
4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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