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CVE-2020-1960

14
FAUCET Score

CVE-2020-1960 describes a local man-in-the-middle vulnerability in Apache Flink versions 1.1.0 through 1.10.0 when the JMXReporter is enabled and configured with a specific port. An attacker with local machine access can exploit this by crafting a request to rebind the JMXRMI registry, compromising JMX connections. This medium-severity vulnerability (CVSS 4.7) requires high attack complexity and low privileges, potentially leading to the extraction of credentials and sensitive data. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.1.0, <= 1.1.5CPE matchmatch criteria
cpe:2.3:a:apache:flink:*:*:*:*:*:*:*:*
>= 1.2.0, <= 1.2.1CPE matchmatch criteria
cpe:2.3:a:apache:flink:*:*:*:*:*:*:*:*
>= 1.3.0, <= 1.3.3CPE matchmatch criteria
cpe:2.3:a:apache:flink:*:*:*:*:*:*:*:*
>= 1.4.0, <= 1.4.2CPE matchmatch criteria
cpe:2.3:a:apache:flink:*:*:*:*:*:*:*:*
>= 1.5.0, <= 1.5.6CPE matchmatch criteria
cpe:2.3:a:apache:flink:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.86%
Probability of exploitation in next 30 days
EPSS Percentile
54.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0086 is in the 90th percentile among its peer group of 1,297 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

mavenpatch availablevia ghsa
Product: org.apache.flink:flink-coreFixed in: 1.9.3
mavenpatch availablevia ghsa
Product: org.apache.flink:flink-coreFixed in: 1.10.1
redhatpatch availablevia redhat_api
Product: Red Hat Fuse 7.8.0Fixed in: camel-flink
View patch

Vendor Advisories (2)

mavenGHSA-6g88-99wj-8mggmedium

Command injection in Apache Flink

May 21, 2021
redhatCVE-2020-1960Moderate

apache-flink: JMX information disclosure vulnerability

May 13, 2020

References

lists.apache.org / thread.html/r23e559dee1e69741557b5fe431846de1f1a5981356d0ddb9482df88a%40%3Cdev.flink.apache.org%3E
Mailing ListPatchVendor Advisory
lists.apache.org / thread.html/r26fcdd4fe288323006253437ebc4dd6fdfadfb5e93465a0e4f68420d%40%3Cuser-zh.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