CVE-2022-2256Network attack vector

Privileged script execution via unsanitized default roles

Published Sep 1, 2022 · Updated Aug 3, 2024

Stored XSS in client registration in Red Hat Single Sign-On 7 allows remote authenticated users to run scripts in the admin console. Client-registration UI fields store improperly sanitized input, and the admin console renders it while loading default roles. Administrative privileges are required to plant the payload; execution can expose or alter data available to an administrator's browser.

CVSS severity3.8
Low
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in client registration in Red Hat Single Sign-On 7 allows remote authenticated users to run scripts in the admin console. Client-registration UI fields store improperly sanitized input, and the admin console renders it while loading default roles. Administrative privileges are required to plant the payload; execution can expose or alter data available to an administrator's browser.

The record

CVE
CVE-2022-2256
Published
Sep 1, 2022
Updated
Aug 3, 2024
Vendor
Red Hat
Product
Red Hat Single Sign-On
Classifications
CWE-80, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 1, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=keycloak as shipped in Red Hat Single Sign-On 7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Red Hat · Red Hat Single Sign-Onversion=keycloak as shipped in Red Hat Single Sign-On 7

Published CVSS scores

3.8GitHubCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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