CVE-2022-4137

Name: CVE-2022-4137
Creator: NVD / NIST
Published: 2023-09-25T20:15:09.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.15%

Last modified Jun 17, 2026

CVE-2022-4137 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A reflected cross-site scripting (XSS) vulnerability was found in the 'oob' OAuth endpoint due to incorrect null-byte handling. This issue allows a malicious link to insert an arbitrary URI into a Keycloak error page. EPSS estimates a 1.15% chance of exploitation in the next 30 days.

Description

A reflected cross-site scripting (XSS) vulnerability was found in the 'oob' OAuth endpoint due to incorrect null-byte handling. This issue allows a malicious link to insert an arbitrary URI into a Keycloak error page. This flaw requires a user or administrator to interact with a link in order to be vulnerable. This may compromise user details, allowing it to be changed or collected by an attacker.

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

1.15%

62.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Redhat	Keycloak	All versions
Redhat	Single Sign-On	7.6

References

https://access.redhat.com/errata/RHSA-2023:1043Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:1044Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:1045Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:1049Vendor Advisory
https://access.redhat.com/security/cve/CVE-2022-4137Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2148496Issue Tracking, Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:1043Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:1044Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:1045Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:1049Vendor Advisory
https://access.redhat.com/security/cve/CVE-2022-4137Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2148496Issue Tracking, Vendor Advisory

Timeline

Published: Sep 25, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-4137?

How severe is CVE-2022-4137?

CVE-2022-4137 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.15% probability of exploitation in the next 30 days.

How do I fix CVE-2022-4137?

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-2022-4137?

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

Scan your code now

Source: NVD / NIST