CVE-2021-20289

Name: CVE-2021-20289
Creator: NVD / NIST
Published: 2021-03-26T17:15:13.217+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.44%

Last modified Jun 17, 2026

CVE-2021-20289 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A flaw was found in RESTEasy in all versions of RESTEasy up to 4.6.0.Final. The endpoint class and method names are returned as part of the exception response when RESTEasy cannot convert one of the request URI path or query values to the matching JAX-RS resource method's parameter value. EPSS estimates a 1.44% chance of exploitation in the next 30 days.

Description

A flaw was found in RESTEasy in all versions of RESTEasy up to 4.6.0.Final. The endpoint class and method names are returned as part of the exception response when RESTEasy cannot convert one of the request URI path or query values to the matching JAX-RS resource method's parameter value. The highest threat from this vulnerability is to data confidentiality.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.44%

69.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Redhat	Resteasy	<= 4.6.0
Netapp	Oncommand Insight	All versions
Quarkus	Quarkus	< 1.13.4
Oracle	Communications Cloud Native Core Console	1.9.0

References

https://bugzilla.redhat.com/show_bug.cgi?id=1935927Issue Tracking, Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1935927Issue Tracking, Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory

Timeline

Published: Mar 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20289?

How severe is CVE-2021-20289?

CVE-2021-20289 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.44% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20289?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-20289?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST