CVE-2020-1960
Command injection in Apache Flink
A vulnerability in 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) where, when running a process with an enabled JMXReporter, with a port configured via metrics.reporter.reporter_name>.port, an attacker with local access to the machine and JMX port can execute a man-in-the-middle attack using a specially crafted request to rebind the JMXRMI registry to one under the attacker's control. This compromises any connection established to the process via JMX, allowing extraction of credentials and any other transferred data.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
4.7
A vulnerability in 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) where, when running a process with an enabled JMXReporter, with a port configured via metrics.reporter.reporter_name>.port, an attacker with local access to the machine and JMX port can execute a man-in-the-middle attack using a specially crafted request to rebind the JMXRMI registry to one under the attacker's control. This compromises any connection established to the process via JMX, allowing extraction of credentials and any other transferred data.
- Record
CVE-2020-1960- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 1.9 Low
AV:L/AC:M/Au:N/C:P/I:N/A:N - Updated
- 2026-11-02
CVE List No score
A vulnerability in 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) where, when running a process with an enabled JMXReporter, with a port configured via metrics.reporter.reporter_name>.port, an attacker with local access to the machine and JMX port can execute a man-in-the-middle attack using a specially crafted request to rebind the JMXRMI registry to one under the attacker's control. This compromises any connection established to the process via JMX, allowing extraction of credentials and any other transferred data.
- Record
CVE-2020-1960- Updated
- 2026-11-02
EUVDEUVD-2021-0970 No score
A vulnerability in 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) where, when running a process with an enabled JMXReporter, with a port configured via metrics.reporter.reporter_name>.port, an attacker with local access to the machine and JMX port can execute a man-in-the-middle attack using a specially crafted request to rebind the JMXRMI registry to one under the attacker's control. This compromises any connection established to the process via JMX, allowing extraction of credentials and any other transferred data.
- Record
EUVD-2021-0970- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6g88-99wj-8mgg
4.7
Command injection in Apache Flink
A vulnerability in Apache Flink where, when running a process with an enabled JMXReporter, with a port configured via metrics.reporter.reporter_name>.port, an attacker with local access to the machine and JMX port can execute a man-in-the-middle attack using a specially crafted request to rebind the JMXRMI registry to one under the attacker's control. This compromises any connection established to the process via JMX, allowing extraction of credentials and any other transferred data.
- Record
GHSA-6g88-99wj-8mgg- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-74
- Updated
- 2026-11-02
OSV
4.7
A vulnerability in 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) where, when running a process with an enabled JMXReporter, with a port configured via metrics.reporter.reporter_name>.port, an attacker with local access to the machine and JMX port can execute a man-in-the-middle attack using a specially crafted request to rebind the JMXRMI registry to one under the attacker's control. This compromises any connection established to the process via JMX, allowing extraction of credentials and any other transferred data.
- Record
CVE-2020-1960- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-6g88-99wj-8mgg
4.7
Command injection in Apache Flink
A vulnerability in Apache Flink where, when running a process with an enabled JMXReporter, with a port configured via metrics.reporter.reporter_name>.port, an attacker with local access to the machine and JMX port can execute a man-in-the-middle attack using a specially crafted request to rebind the JMXRMI registry to one under the attacker's control. This compromises any connection established to the process via JMX, allowing extraction of credentials and any other transferred data.
- Record
GHSA-6g88-99wj-8mgg- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-74
- Updated
- 2026-11-02
OSVBIT-flink-2020-1960 No score
A vulnerability in 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) where, when running a process with an enabled JMXReporter, with a port configured via metrics.reporter.reporter_name>.port, an attacker with local access to the machine and JMX port can execute a man-in-the-middle attack using a specially crafted request to rebind the JMXRMI registry to one under the attacker's control. This compromises any connection established to the process via JMX, allowing extraction of credentials and any other transferred data.
- Record
BIT-flink-2020-1960- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.flink:flink-coreMaven |
before 1.9.2 | 1.9.2 |
org.apache.flink:flink-coreMaven |
1.10.0 to 1.10.0 | 1.10.1 |
flinkBitnami |
1.1.0 up to 1.1.6, 1.2.0 up to 1.2.2, 1.3.0 up to 1.3.4, 1.4.0 up to 1.4.3, 1.5.0 up to 1.5.7, 1.6.0 up to 1.6.5, 1.7.0 up to 1.7.3, 1.8.0 up to 1.8.4, 1.9.0 up to 1.9.3, 1.10.0 up to 1.10.1 | 1.1.61.2.21.3.41.4.31.5.71.6.51.7.31.8.41.9.31.10.1 |
org.apache.flink:flink-coreMaven |
before 1.9.3, plus listed versions 0.10.00.10.0-hadoop10.10.10.10.1-hadoop10.10.2 Show 45 moreShow less0.10.2-hadoop10.6-hadoop2-incubating0.6-incubating0.6.1-hadoop2-incubating0.6.1-incubating0.7.0-hadoop2-incubating0.7.0-incubating0.8.00.8.0-hadoop10.8.10.8.1-hadoop10.9.00.9.0-hadoop10.9.0-milestone-10.9.0-milestone-1-hadoop10.9.10.9.1-hadoop11.0.01.0.0-hadoop11.0.11.0.1-hadoop11.0.21.0.2-hadoop11.0.31.0.3-hadoop11.1.01.1.11.1.1-hadoop11.1.21.1.2-hadoop11.1.31.1.3-hadoop11.1.41.1.4-hadoop11.1.51.1.5-hadoop11.2.01.2.11.3.01.3.11.3.21.3.31.4.01.4.11.4.2 |
1.9.3 |
org.apache.flink:flink-coreMaven |
1.10.0 up to 1.10.1 | 1.10.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-1960 is a medium vulnerability (CVSS 4.7) in Apache Flink, published May 14, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.86%, the 58th percentile. Fixed in org.apache.flink:flink-core 1.9.2.
References
lists.apache.org/thread.html/r23e559dee1e69741557b5fe431846de1f1a5981356d0ddb9482df88a%40%3Cdev.flink.apache.org%3E
lists.apache.org/thread.html/r28f17e564950d663e68cc6fe75756012dda62ac623766bb9bc5e7034%40%3Cissues.flink.apache.org%3E
lists.apache.org/thread.html/r663cf0d5c386bba2f562d45ad484d786151a84f0b95e45e2b0fb8e50%40%3Cissues.flink.apache.org%3E
lists.apache.org/thread.html/r26fcdd4fe288323006253437ebc4dd6fdfadfb5e93465a0e4f68420d%40%3Cuser-zh.flink.apache.org%3E
nvd.nist.gov/vuln/detail/CVE-2020-1960
lists.apache.org/thread.html/r26fcdd4fe288323006253437ebc4dd6fdfadfb5e93465a0e4f68420d@%3Cuser-zh.flink.apache.org%3E
lists.apache.org/thread.html/r28f17e564950d663e68cc6fe75756012dda62ac623766bb9bc5e7034@%3Cissues.flink.apache.org%3E
lists.apache.org/thread.html/r663cf0d5c386bba2f562d45ad484d786151a84f0b95e45e2b0fb8e50@%3Cissues.flink.apache.org%3E
github.com/advisories/GHSA-6g88-99wj-8mgg
Left out here: 22 versions. The JSON record has them.