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No exploitation reportedFix available

CVE-2020-1960

No exploitation reported by the sources we read.

  • Published2020-05-14
  • Fixed in1.10.1 · 1.9.3 · 1.8.4 · 1.7.3 · 1.6.5 · 1.5.7

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2020-05-1417:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-1960?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-1960?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV · NVD
flink
BranchAffectedFixed in
1.10≥ 1.10.0, < 1.10.11.10.1
1.9≥ 1.9.0, < 1.9.31.9.3
1.8≥ 1.8.0, < 1.8.41.8.4
1.7≥ 1.7.0, < 1.7.31.7.3
1.6≥ 1.6.0, < 1.6.51.6.5
1.5≥ 1.5.0, < 1.5.71.5.7
1.4≥ 1.4.0, < 1.4.31.4.3
1.3≥ 1.3.0, < 1.3.41.3.4
1.2≥ 1.2.0, < 1.2.21.2.2
1.1≥ 1.1.0, < 1.1.61.1.6
Apache flink
BranchAffectedFixed in
1.1≥ 1.1.0, ≤ 1.1.5no fix published
1.2≥ 1.2.0, ≤ 1.2.1no fix published
1.3≥ 1.3.0, ≤ 1.3.3no fix published
1.4≥ 1.4.0, ≤ 1.4.2no fix published
1.5≥ 1.5.0, ≤ 1.5.6no fix published
1.6≥ 1.6.0, ≤ 1.6.4no fix published
1.7≥ 1.7.0, ≤ 1.7.2no fix published
1.8≥ 1.8.0, ≤ 1.8.3no fix published
1.9≥ 1.9.0, ≤ 1.9.2no fix published
1.10= 1.10.0no fix published
flink-core
BranchAffectedFixed in
1.10≥ 1.10.0, < 1.10.11.10.1
1.9< 1.9.31.9.3

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • RHSA-2020:5568 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Fuse 7.8.0 release and security update

Full record on NVD

Fix

  1. Update flink to 1.10.1 · 1.9.3 · 1.8.4 · 1.7.3 · 1.6.5 · 1.5.7 · 1.4.3 · 1.3.4
  2. Vendor fix Red Hat Product Security RHSA-2020:5568 · 1 productBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. Installation instructions are available from the Fuse 7.8.0 product documentation page: https://access.redhat.com/documentation/en-us/red_hat…

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Published
2020-05-14
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-6g88-99wj-8mgg

Frequently asked questions

What is CVE-2020-1960?

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.

Is CVE-2020-1960 actively exploited?

Active exploitation of CVE-2020-1960 has not been confirmed. Its EPSS score was 0.9% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-1960?

CVE-2020-1960 has a CVSS v3 base score of 4.7 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

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