How severe is CVE-2022-2256?

CVE-2022-2256 has a CVSS 3.x base score of 3.8, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2022-2256 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-2256?

CVE-2022-2256 affects Redhat Single Sign-on. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-2256?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-2256 published?

CVE-2022-2256 was published on 2022-09-01 and last updated on 2026-06-17.

CVE-2022-2256

CVE-2022-2256 is a low-severity vulnerability in Redhat Single Sign-on with a CVSS 3.x base score of 3.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Low (CVSS 3.x base score 3.8)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Redhat Single Sign-on
Published: 2022-09-01
Last modified: 2026-06-17

Description

A Stored Cross-site scripting (XSS) vulnerability was found in keycloak as shipped in Red Hat Single Sign-On 7. This flaw allows a privileged attacker to execute malicious scripts in the admin console, abusing the default roles functionality.

Frequently asked questions

What is CVE-2022-2256?: A Stored Cross-site scripting (XSS) vulnerability was found in keycloak as shipped in Red Hat Single Sign-On 7. This flaw allows a privileged attacker to execute malicious scripts in the admin console, abusing the default roles functionality.
How severe is CVE-2022-2256?: CVE-2022-2256 has a CVSS 3.x base score of 3.8, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2022-2256 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-2256?: CVE-2022-2256 affects Redhat Single Sign-on. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-2256?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-2256 published?: CVE-2022-2256 was published on 2022-09-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*

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