PT-2023-2226 · Keycloak+1 · Keycloak

Patrick Del Bello · Published 2023-02-27 · Updated 2025-12-04 · CVE-2022-4137

Positive Technologies (AI Summary)

CVSS v2.0

9.4

High

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:N

Name of the Vulnerable Software and Affected Versions Keycloak (affected versions not specified)

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. The flaw requires a user or administrator to interact with a link in order to be vulnerable, which may compromise user details, allowing them to be changed or collected by an attacker. API Endpoints: 'oob' OAuth endpoint The vulnerability may allow an attacker to conduct phishing attacks and alter the appearance of web pages.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Improper Encoding or Escaping of Output

Weakness Enumeration

CWE-79

CWE-116

CWE-81

Related Identifiers

BDU:2023-01978

CVE-2022-4137

GHSA-9HHC-PJ4W-W5RV

RHSA-2023:1043

RHSA-2023:1044

RHSA-2023:1045

Affected Products

Keycloak

References · 22

• https://access.redhat.com/security/cve/CVE-2022-4137 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2023:1045 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-01978 · Security Note
• https://access.redhat.com/errata/RHSA-2023:1044 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-4137 · Security Note
• https://access.redhat.com/errata/RHSA-2023:1049 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-4137 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2148496 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2023:1043 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-9hhc-pj4w-w5rv · Vendor Advisory
• https://github.com/keycloak/keycloak · Note
• https://github.com/keycloak/keycloak/security/advisories/GHSA-9hhc-pj4w-w5rv · Note
• https://github.com/keycloak/keycloak/commit/30d0e9d22dae51392e5a3748a1c68c116667359a · Note
• https://github.com/keycloak/keycloak/pull/16774 · Note
• https://t.me/cibsecurity/71017 · Telegram Post