CVE-2020-10688

Name: CVE-2020-10688
Creator: NVD / NIST
Published: 2021-05-27T19:15:07.643+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.39%

Last modified Jun 17, 2026

CVE-2020-10688 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A cross-site scripting (XSS) flaw was found in RESTEasy in versions before 3.11.1.Final and before 4.5.3.Final, where it did not properly handle URL encoding when the RESTEASY003870 exception occurs. An attacker could use this flaw to launch a reflected XSS attack.. EPSS estimates a 1.39% chance of exploitation in the next 30 days.

Description

A cross-site scripting (XSS) flaw was found in RESTEasy in versions before 3.11.1.Final and before 4.5.3.Final, where it did not properly handle URL encoding when the RESTEASY003870 exception occurs. An attacker could use this flaw to launch a reflected XSS attack.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

1.39%

68.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Redhat	Fuse	1.0
Redhat	Jboss Enterprise Application Platform	All versions
Redhat	Openshift Application Runtimes	All versions
Redhat	Resteasy	< 3.11.1
Redhat	Resteasy	>= 4.5.0, < 4.5.3
Redhat	Jboss Enterprise Application Platform	7.3
Redhat	Jboss Enterprise Application Platform	7.4

References

https://bugzilla.redhat.com/show_bug.cgi?id=1814974Issue Tracking, Patch, Vendor Advisory
https://github.com/quarkusio/quarkus/issues/7248Exploit, Issue Tracking, Third Party Advisory
https://issues.redhat.com/browse/RESTEASY-2519Issue Tracking, Permissions Required, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210706-0008/Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1814974Issue Tracking, Patch, Vendor Advisory
https://github.com/quarkusio/quarkus/issues/7248Exploit, Issue Tracking, Third Party Advisory
https://issues.redhat.com/browse/RESTEASY-2519Issue Tracking, Permissions Required, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210706-0008/Third Party Advisory

Timeline

Published: May 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10688?

How severe is CVE-2020-10688?

CVE-2020-10688 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.39% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10688?

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-2020-10688?

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

Scan your code now

Source: NVD / NIST